World War II

September 1, 1939 – September 2, 1945 · European theater — Berlin, Pacific theater — Tokyo

Result Allied victory

Global war from 1939 to 1945 between the Allies, led by the United Kingdom, the Soviet Union, the United States and China, and the Axis powers, led by Germany, Japan and Italy. It began with the German invasion of Poland and ended with the surrender of Japan, and it was the deadliest conflict in history, including the Holocaust and the atomic bombings of Hiroshima and Nagasaki.

On the map Overview Contemporaries

Allies

Axis

Other

United Kingdom

Soviet Union

United States

Republic of China

France

Poland

Canada

Australia

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New Zealand

India

South Africa

Netherlands

Belgium

Greece

Norway

Yugoslavia

Free France

Egypt

Mexico

Hungary

Finland Co-belligerent of Germany against the Soviet Union, 1941-44

Germany

Italy

Japan

Kingdom of Romania

Bulgaria

Dwight D. Eisenhower Supreme Allied Commander, Allied Expeditionary Force

Franklin D. Roosevelt President, United States

Joseph Stalin Gen Secretary of Communist Party, Soviet Union

Chiang Kai-shek

Nikita Khrushchev Commissar, Soviet Union

Winston Churchill Prime Minister, United Kingdom

Chester W. Nimitz

Rodion Malinovsky

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Semyon Timoshenko

Kliment Voroshilov

Douglas MacArthur military commander

George C. Marshall Chief of Staff of the Army, United States

Omar Bradley

Georgy Zhukov Marshal of the Soviet Union, Soviet Union

Bernard Montgomery Field Marshal, Commander of the British Eighth Army and 21st Army Group

Josip Broz Tito Commander, Yugoslav Partisans, Led the communist Partisans who liberated most of Yugoslavia

Adolf Hitler Führer, Germany

Hirohito Emperor, Japan

Benito Mussolini Prime Minister, Italy

Hermann Göring Luftwaffe Reichsmarschall, Germany

Isoroku Yamamoto

Heinrich Himmler Reichsführer-SS, Nazi Germany

Karl Dönitz Grand Admiral, Commander-in-Chief of the Kriegsmarine

Wilhelm Keitel

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Doihara Kenji

Yoshijirō Umezu military commander

Emilio De Bono

Hideki Tojo

Erwin Rommel Field Marshal, Commander of the Afrika Korps and Army Group B

Joachim von Ribbentrop Foreign Minister, Nazi Germany

Strength and losses

United States Strength 16,112,566 · Killed 291,557 · Deaths 405,399 · Wounded 670,846

Belgium Killed c. 9,600

Yugoslavia Killed c. 305,000

Norway Killed c. 3,000

Canada Killed c. 41,992

United Kingdom Killed c. 418,765

Netherlands Killed c. 7,900

Greece Killed c. 18,300

Australia Killed c. 33,826

New Zealand Killed c. 12,200

Poland Killed c. 320,000

Republic of China Killed c. 1,350,000

South Africa Killed c. 8,700

Hungary Killed c. 136,000

Finland Killed c. 65,000

Italy Killed c. 226,900

Kingdom of Romania Killed c. 300,000

Bulgaria Killed c. 10,000

Germany Killed c. 3,500,000

Japan Killed c. 1,740,000

Killed: c. 16,634,907

Units

12th Army Group Ninth Army (United States) US Third Army Joseph Theodore Dickman George S. Patton 1944–1945 1st Belorussian Front Konstantin Rokossovsky 1st Ukrainian Front Georgy Zhukov Ivan Konev Nikolai Vatutin 21st Army Group Bernard Montgomery 9th Canadian Infantry Brigade 2nd Baltic Front

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Army Group South Erich von Manstein Fedor von Bock Ferdinand Schörner Gerd von Rundstedt Johannes Frießner Otto Wöhler Walter von Reichenau 8th Army (Wehrmacht) Johannes Blaskowitz Otto Wöhler 10th Army (Wehrmacht) Heinrich von Vietinghoff Joachim Lemelsen Walter von Reichenau 11th Army (Wehrmacht) 11th SS Panzer Army 14th Army (Wehrmacht) Eberhard von Mackensen Joachim Lemelsen Otto Wöhler Wilhelm List 1939–present 16th Army (Wehrmacht) II Army Corps (Wehrmacht)

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71st Group Army 75th Group Army 79th Group Army 81st Group Army 82nd Group Army 83rd Group Army Arab Legion Brazilian Army Artur da Costa e Silva Marshal Deodoro da Fonseca Marshal Emílio Garrastazu Médici General of the Army Ernesto Geisel General of the Army Eurico Gaspar Dutra Marshal Floriano Peixoto Marshal Getúlio Vargas Sergeant Humberto de Alencar Castelo Branco General Jair Bolsonaro Captain João Figueiredo General of the Army Manuel Marques de Sousa, Count of Porto Alegre Lieutenant General

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Battles and events 345

Key events

Second Sino-Japanese War July 7, 1937 – September 2, 1945 · Chinese victory
- Counterinsurgency in Manchuria November 4, 1931 – 1941 · Japanese-Manchukuo victory
- Battle of Beiping–Tianjin August 1937 · Japanese victory
- Tianjin–Pukou Railway Operation August 1937 – November 1937 · Japanese victory
- Operation Chahar August 1937 · Japanese victory
- Battle of Shanghai August 13 – November 26, 1937 · Japanese victory
  - Defense of Sihang Warehouse October 26 – November 1, 1937 · Withdrawal of Chinese forces to the Shanghai International Settlement on 31 October 1937
- Battle of Taiyuan September 1 – November 9, 1937 · Japanese victory
- Battle of Xinkou September 13 – November 11, 1937 · Japanese victory
- Battle of Pingxingguan September 24–25, 1937 · Japanese victory
- Battle of Xuzhou December 1, 1937 – May 19, 1938 · Japanese victory
- Battle of Nanking December 1–13, 1937 · Japanese victory
  - Hundred man killing contest 1937
- USS Panay incident December 12, 1937 · Japanese victory
- Nanjing Massacre December 13, 1937 – February 7, 1938
- Bombing of Chongqing February 18, 1938 – August 23, 1943
- Battle of Taierzhuang March 24 – April 7, 1938 · Chinese victory
- Amoy Operation May 10–12, 1938 · Japanese victory
- 1938 Yellow River flood June 1938
- Battle of Wuhan June 11 – October 27, 1938 · Japanese victory
- Canton Operation October 1938 – December 1938 · Japanese victory
- Battle of Wanjialing October 11, 1938 · Chinese victory
- Hainan Island Operation February 1939 · Japanese victory
- Battle of Nanchang May 9, 1939 · Japanese victory
- Battle of Suixian–Zaoyang May 24, 1939 · Chinese victory
- Battle of Changsha (1939) September 17 – October 6, 1939 · Chinese victory
- 1939–1940 Winter Offensive November 1939 – March 1940 · Japanese victory
- Battle of South Guangxi November 15, 1939 – November 30, 1940 · Japanese withdrawal from Nanning after the successful invasion of French Indochina
- Battle of Kunlun Pass December 18, 1939 – January 11, 1940 · Chinese victory
- Battle of Wuyuan March 16 – April 3, 1940 · Chinese victory
- Battle of Zaoyang–Yichang May 1 – June 24, 1940 · Japanese victory
- Hundred Regiments Offensive August 20 – December 5, 1940 · Chinese victory
- Japanese invasion of French Indochina September 22–26, 1940 · Japanese victory
- Battle of South Henan January 30 – March 1, 1941 · Chinese victory
- Battle of Shanggao March 14 – April 9, 1941 · Chinese victory
- Battle of South Shanxi May 7–27, 1941 · Japanese victory
- Battle of Changsha (1941) September 6 – October 8, 1941
- Proposed Japanese invasion of Sichuan 1942 · Chinese victory
- Battle of Changsha (1941–1942) January 15, 1942 · Chinese victory
- Battle of the Yunnan–Burma Road March 1942 – June 1942 · Axis victory
  - Battle of Toungoo March 30, 1942 · Japanese victory
  - Battle of Yenangyaung April 19, 1942 · Japanese victory
- Zhejiang-Jiangxi campaign May 15 – September 6, 1942
- Battle of West Hubei May 12 – June 3, 1943 · Chinese victory
- Battle of Northern Burma and Western Yunnan October 1943 – March 1945 · Allied victory
  - Battle of Mount Song June 4 – September 7, 1944 · Allied victory
- Battle of Changde November 2 – December 20, 1943 · Chinese victory
- Operation Ichi-Go April 17 – December 10, 1944 · Japanese victory
  - Battle of Guilin–Liuzhou August 16 – November 24, 1944 · Japanese victory
- Battle of West Henan–North Hubei March 21 – May 11, 1945 · Stalemate
- Second Guangxi campaign April 1945 – August 4, 1945 · Chinese victory
- Battle of West Hunan April 6 – June 7, 1945 · Chinese victory
Invasion of Poland September 1 – October 6, 1939 · German–Soviet victory
- Battle of Westerplatte September 1–7, 1939 · German victory
- Battle of Danzig Bay September 1, 1939 · German victory
- Bombing of Warsaw in World War II September 1–27, 1939
- Battle of the Border September 1939 · German victory
  - Battle of Mława September 1–3, 1939 · German victory
  - Charge at Krojanty September 1, 1939 · German victory
  - Battle of Tuchola Forest September 1–5, 1939 · German victory
  - Battle of Mokra September 1, 1939 · Polish victory
  - Battle of Lasy Królewskie September 1, 1939 · Inconclusive
  - Battle of Chojnice (1939) September 1, 1939 · German victory
  - Battle of Węgierska Górka September 1–3, 1939 · German victory
- Slovak invasion of Poland September 1–16, 1939 · Slovak victory
- Defence of the Polish Post Office in Danzig September 1, 1939 · Danzig/German victory
- Bombing of Wieluń September 1, 1939
- Battle of Mława September 1–3, 1939 · German victory
- Battle of Borowa Góra September 2–6, 1939 · German victory
- Battle of Tomaszów Mazowiecki September 6, 1939 · German victory
- Battle of Wizna September 7–10, 1939 · German victory
- Battle of Łomża (1939) September 7–10, 1939 · German victory
- Siege of Warsaw (1939) September 8–28, 1939 · German victory
- Battle of Radom September 8–9, 1939 · German victory
- Battle of the Bzura September 9–19, 1939 · German victory
- Battle of Hel September 9 – October 2, 1939 · German victory
- Battle of Modlin September 13–29, 1939 · German victory
- Battle of Kobryń September 14–18, 1939 · Inconclusive
- Battle of Wilno (1939) September 18–19, 1939 · Soviet victory
- Battle of Grodno (1939) September 20–24, 1939 · Soviet victory
- Battle of Szack September 28, 1939 · Polish victory
- Battle of Wytyczno October 1, 1939 · Soviet victory
- Battle of Kock (1939) October 2–5, 1939 · German victory
Winter War November 30, 1939 – March 13, 1940 · Moscow Peace Treaty
- Battle of Petsamo November 30, 1939 – March 12, 1940 · Soviet victory
- Battle of Salla (1939) November 30, 1939 – February 28, 1940 · Finnish victory
- Battle of Taipale December 6–27, 1939 · Finnish victory
- Battle of Suomussalmi December 7, 1939 – January 8, 1940 · Finnish victory
  - Battle of Raate Road January 1–7, 1940 · Finnish victory
- Battle of Kollaa December 7, 1939 – March 13, 1940 · Finnish victory
- Battle of Tolvajärvi December 12, 1939 · Finnish victory
- Battle of Summa December 16, 1939 – February 15, 1940 · First battle: Finnish victory Second battle: Soviet victory
- Battle of Kelja December 25–27, 1939 · Finnish victory
- Battle of Kuhmo January 4–7, 1940 · Stalemate
- Battle of Honkaniemi February 25–27, 1940 · Soviet victory
Battle of France May 10 – June 25, 1940 · Axis victory
- German invasion of the Netherlands May 10–15, 1940 · German victory
  - Battle of the Grebbeberg May 11–13, 1940 · German victory
  - German bombing of Rotterdam May 14, 1940
- German invasion of Belgium (1940) May 10–28, 1940 · German victory
  - Battle of Fort Eben-Emael May 10–11, 1940 · German victory
  - Battle of the Lys (1940) May 23–28, 1940 · German victory
- Battle of Zeeland May 10–18, 1940 · German victory
- Battle of Sedan (1940) May 13, 1940 · German victory
- Battle of Boulogne May 22–25, 1940 · German victory
- Battle of Dunkirk May 26 – June 4, 1940
- Dunkirk evacuation May 26 – June 4, 1940 · Successful retreat
- Siege of Lille (1940) May 28–31, 1940
- Italian invasion of France June 10–25, 1940 · Armistice of Villa Incisa
Battle of Britain July 10 – October 31, 1940 · British victory
- Adlertag August 13, 1940 · British victory
- Battle of Britain Day September 15, 1940 · British victory
Operation Barbarossa June 22 – December 5, 1941 · Axis strategic failure
- June Uprising in Lithuania 1941
- Summer War 1941 · Estonian-German victory
- Defense of Brest Fortress June 1941 – June 29, 1941 · German victory
- Battle of Smolensk (1941) July 10 – September 10, 1941 · German victory
  - Siege of Mogilev July 3–26, 1941 · German victory
  - Yelnya offensive August 30 – September 8, 1941 · Soviet victory
- Battle of Kiev (1941) August 7 – September 26, 1941 · German victory
- Operation Beowulf September 6 – October 21, 1941 · German victory
- Roslavl–Novozybkov offensive September 12, 1941 · German victory
- Battle of Moscow October 2, 1941 – January 7, 1942 · Soviet victory
  - Battle of Bryansk October 2–21, 1941 · German victory
Eastern Front (World War II) June 22, 1941 – May 9, 1945 · Soviet victory
- Baltic Sea campaigns (1939–1945) 1939 – May 9, 1945 · Allied victory
- Defense of Brest Fortress June 1941 – June 29, 1941 · German victory
- Battle of Hanko (1941) June 22 – December 2, 1941 · Soviet troops evacuated by sea
- German declaration of war on the Soviet Union June 22, 1941
- Operation Barbarossa June 22 – December 5, 1941 · Axis strategic failure
  - June Uprising in Lithuania 1941
  - Summer War 1941 · Estonian-German victory
  - Defense of Brest Fortress June 1941 – June 29, 1941 · German victory
  - Battle of Smolensk (1941) July 10 – September 10, 1941 · German victory
  - Battle of Kiev (1941) August 7 – September 26, 1941 · German victory
  - Operation Beowulf September 6 – October 21, 1941 · German victory
  - Roslavl–Novozybkov offensive September 12, 1941 · German victory
  - Battle of Moscow October 2, 1941 – January 7, 1942 · Soviet victory
- Battle of Raseiniai June 23–27, 1941 · German victory
- Operation Silver Fox June 29 – November 17, 1941 · Allied victory
  - Operation Platinum Fox June 29 – September 21, 1941 · Soviet victory
  - Operation Arctic Fox July 1 – November 17, 1941 · Stalemate
- Operation München July 2–26, 1941 · Axis victory
- Baltic operation July 9, 1941
- Battle of Kiev (1941) August 7 – September 26, 1941 · German victory
- Siege of Odessa August 8 – October 16, 1941 · Axis victory
- Siege of Leningrad September 8, 1941 – January 27, 1944 · Soviet victory
  - Leningrad strategic defensive July 10 – September 30, 1941 · German victory
  - Demyansk Pocket January 7 – May 25, 1942 · German victory
  - Battle of Lyuban January 7 – April 30, 1942 · German victory
  - Battle of Someri July 8–9, 1942 · Finnish victory
  - Operation Iskra January 12–30, 1943 · Soviet victory
  - Operation Polar Star February 1943 – April 1943 · German victory
  - Leningrad–Novgorod offensive January 14 – March 1, 1944 · Soviet victory
- Battle of the Sea of Azov September 26 – October 11, 1941
- Battle of Vyazma–Bryansk October 1941 · German victory
- Battle of Bryansk October 2–21, 1941 · German victory
- Battle of Moscow October 2, 1941 – January 7, 1942 · Soviet victory
  - Battle of Bryansk October 2–21, 1941 · German victory
- Crimean campaign October 18, 1941 – July 4, 1942 · Axis victory
- First Battle of Kharkov October 20–24, 1941 · German victory
- Siege of Sevastopol (1941–1942) October 30, 1941 – July 4, 1942 · Axis victory
- Battles of Rzhev January 5, 1942 – March 21, 1943 · Inconclusive
  - Rzhev–Vyazma Offensive January 8 – April 20, 1942 · Inconclusive
  - Toropets–Kholm offensive February 6, 1942 · Soviet victory
  - Vyazma airborne operation February 28, 1942 · German victory
  - Operation "Seydlitz" July 2–23, 1942 · German victory
  - Battle of Rzhev, summer 1942 July 30 – October 1, 1942 · German victory
  - Battle of Velikiye Luki November 19, 1942 – January 16, 1943 · Soviet victory
  - Operation Mars November 25 – December 16, 1942 · German victory
- Yevpatoria assault January 8, 1942 · German victory
- Kholm Pocket January 23 – May 5, 1942 · German defensive victory
- Barvenkovo–Lozovaya offensive January 31, 1942 · Soviet victory
- Operation Bustard Hunt May 1942 · Axis victory
- Second Battle of Kharkov May 12–29, 1942 · Axis victory
- Defense of the Adzhimushkay quarry May 16 – November 30, 1942 · German victory
- Case Blue June 1 – November 24, 1942 · Soviet victory
- Battle of the Caucasus July 1942 – October 1943 · Soviet victory
- Battle of Stalingrad July 17, 1942 – February 2, 1943 · Soviet victory
  - Operation Uranus November 19–23, 1942 · Soviet victory
  - Operation Little Saturn December 12, 1942 – February 18, 1943 · Soviet victory
  - Operation Winter Storm December 12–23, 1942 · Soviet victory
  - Raid on Tatsinskaya December 18–28, 1942 · Soviet victory
  - Operation Koltso January 10 – February 2, 1943 · Soviet victory
- Operation Edelweiss July 23 – November 18, 1942 · Soviet victory
- Battle of Kalach July 23 – August 11, 1942 · German victory
- Kozelsk offensive September 9, 1942 · Soviet offensive defeated
- Operation Uranus November 19–23, 1942 · Soviet victory
- Operation Mars November 25 – December 16, 1942 · German victory
- Ostrogozhsk–Rossosh offensive January 13–27, 1943 · Soviet victory
- Voronezh–Kastornoye offensive January 24 – February 17, 1943 · Soviet victory
- Operation Gallop January 29 – February 18, 1943 · German victory
- Operation Winterzauber February 16 – March 31, 1943
- Third Battle of Kharkov February 19 – March 15, 1943 · German victory
- Voronezh–Kharkov offensive March 3, 1943 · Soviet victory
- Battle of Sokolovo March 8–13, 1943 · German advance slowed
- Battle of Kursk July 5 – August 23, 1943 · Soviet victory
  - Operation Citadel July 1943 · Soviet victory
  - Battle of Prokhorovka July 12, 1943
- Operation Kutuzov July 12 – August 18, 1943 · Soviet victory
- Donbas strategic offensive (July 1943) July 17 – August 2, 1943 · German victory
- Belgorod–Bogodukhov offensive operation August 3–23, 1943 · Soviet victory
- Donbas strategic offensive (August 1943) August 13 – September 22, 1943 · Soviet victory
- Battle of the Dnieper August 24 – December 23, 1943 · Soviet victory
- Battle of Lenino October 12–13, 1943 · Indecisive
- Battle of Kiev (1943) November 3 – December 22, 1943 · Soviet victory
- Battle of Nevel (1943) December 16, 1943 · Soviet victory
- Dnieper–Carpathian offensive December 24, 1943 – April 14, 1944 · Soviet victory
  - Zhitomir–Berdichev offensive December 24, 1943 – January 14, 1944 · Soviet victory
  - Battle of Korsun–Cherkassy January 24 – February 17, 1944 · Soviet victory
  - Nikopol–Krivoi Rog offensive January 30 – February 29, 1944 · Soviet victory
  - Bereznegovatoye–Snigirevka offensive March 6–18, 1944 · Soviet victory
  - Polesskoe offensive March 15 – April 5, 1944 · German victory
  - Odessa Offensive March 26 – April 30, 1944 · Soviet victory
- Battle of Romania 1944 · Allied victory
  - Battle of Turda September 5 – October 8, 1944
  - Battle of Păuliș September 14–19, 1944 · Romanian–Soviet victory
- Leningrad–Novgorod offensive January 14 – March 1, 1944 · Soviet victory
  - Krasnoye Selo–Ropsha offensive January 14–30, 1944 · Soviet victory
  - Kingisepp–Gdov offensive February 1 – March 1, 1944 · Soviet victory
- Battle of Narva (1944) February 2 – August 10, 1944 · German defensive victory
  - Battle for Narva Bridgehead February 2 – July 26, 1944 · German withdrawal
  - Narva offensive (15–28 February 1944) February 15–28, 1944 · German defensive victory
  - Narva offensive (1–4 March 1944) March 1–4, 1944 · German defensive victory
  - Battle of Auvere July 20–25, 1944 · German defensive victory
  - Narva offensive (July 1944) July 24–30, 1944 · Soviet victory
  - Battle of Tannenberg Line July 25 – August 10, 1944 · German victory
- Rovno–Lutsk offensive February 11, 1944 · Soviet victory
- Uman–Botoșani offensive March 5 – April 17, 1944 · Soviet victory
- Crimean offensive April 8 – May 12, 1944 · Soviet victory
- First Jassy–Kishinev offensive April 8 – June 6, 1944 · Axis victory
  - First Battle of Târgu Frumos April 9–12, 1944 · Axis victory
- Operation Bagration June 22 – August 19, 1944 · Soviet victory
  - Vitebsk–Orsha offensive June 23–28, 1944 · Soviet victory
  - Mogilev offensive June 23–28, 1944 · Soviet victory
  - Bobruysk offensive June 28, 1944 · Soviet victory
  - Minsk offensive June 29 – July 4, 1944 · Soviet Victory
  - Polotsk offensive June 29 – July 4, 1944 · Soviet Victory
  - Vilnius offensive July 1944 · Soviet victory
  - Šiauliai offensive July 5, 1944 · Soviet victory
  - Belostok offensive July 5–27, 1944 · Soviet victory
  - Lublin–Brest offensive July 18 – August 2, 1944 · Soviet victory
  - Kaunas offensive July 28 – August 28, 1944 · Soviet victory
- Battle of Radzymin (1944) August 1–10, 1944 · German victory
- Battle of Studzianki August 9–16, 1944 · Allied victory
- Tartu offensive August 10 – September 6, 1944 · Soviet victory
- Second Jassy–Kishinev offensive August 20–29, 1944 · Soviet victory
- Battle of the Dukla Pass September 8 – October 28, 1944 · Inconclusive
- Baltic offensive September 14 – November 24, 1944 · Soviet victory
  - Riga offensive (1944) September 14 – October 24, 1944 · Soviet victory
  - Tallinn offensive September 17–26, 1944 · Soviet victory
- Belgrade offensive September 15 – November 24, 1944 · Allied victory
- Moonsund operation September 29 – November 24, 1944 · Soviet victory
- Battle of Memel October 5, 1944 – January 28, 1945 · Soviet victory
- Battle of Debrecen October 6–29, 1944 · Inconclusive
- Petsamo–Kirkenes offensive October 7–31, 1944 · Soviet victory
- Nemmersdorf massacre October 21, 1944
- Budapest offensive October 29, 1944 – February 13, 1945 · Allied victory
  - Siege of Budapest December 26, 1944 – February 13, 1945 · Soviet victory
  - Operation Konrad III January 18–27, 1945 · Inconclusive
- Vistula–Oder offensive January 12 – February 2, 1945 · Soviet victory
- Siege of Breslau January 23 – May 6, 1945 · Soviet victory
- Heiligenbeil Pocket January 26 – March 29, 1945 · Soviet victory
- Operation Solstice February 15–18, 1945
- East Pomeranian offensive February 24 – April 4, 1945 · Soviet victory
  - Battle of Kolberg (1945) March 4–18, 1945 · Polish-Soviet victory
- Moravia–Ostrava offensive March 10 – May 5, 1945 · Soviet victory
- Bratislava–Brno offensive March 25 – May 5, 1945 · Soviet victory
- Nagykanizsa–Körmend offensive March 26 – April 15, 1945 · Allied victory * Hungary liberated from German occupation * Defeat of all Axis forces in Hungary
- Battle of the Oder–Neisse April 1945 · Soviet victory
- Vienna offensive April 2–13, 1945 · Allied victory
- Battle of the Seelow Heights April 16–19, 1945 · Soviet victory
- Battle of Berlin April 16 – May 2, 1945 · Soviet victory
  - Battle in Berlin April 23 – May 2, 1945 · Soviet victory
- Battle of Bautzen (1945) April 21–30, 1945 · German victory
Pacific War December 7, 1941 – September 2, 1945 · Allied victory
- Attack on Pearl Harbor December 7, 1941 · Japanese victory
- Philippines campaign (1941–1942) December 7, 1941 – May 10, 1942 · Japanese victory
  - Battle of Bataan January 7 – April 9, 1942 · Japanese victory
- Malayan campaign December 8, 1941 – January 31, 1942 · Japanese victory
  - Battle of Kota Bharu December 8, 1941 · Japanese victory
  - Operation Krohcol December 8–11, 1941 · Axis victory
  - Bombing of Singapore (1941) December 8, 1941 · Inconclusive
  - Battle of Jitra December 11–13, 1941 · Japanese victory
  - Battle of Kampar December 30, 1941 – January 2, 1942 · Allied victory
  - Battle of Slim River January 6–8, 1942 · Japanese victory
  - Battle off Endau January 26–27, 1942 · Japanese victory
- Battle of Hong Kong December 8–25, 1941 · Japanese victory
- South-East Asian theatre of World War II December 8, 1941 – September 9, 1945 · Allied victory
  - Japanese occupation of Cambodia 1941 – 1945
  - Sinking of Prince of Wales and Repulse December 10, 1941 · Japanese victory
  - Burma campaign December 14, 1941 – September 13, 1945 · Allied victory
  - Battle of Rabaul (1942) January 23, 1942 – February 1942 · Japanese victory
  - Japanese coup d'état in French Indochina March 9 – May 15, 1945
- Battle of Guam (1941) December 8–10, 1941 · Japanese victory
- Battle of Wake Island December 8–23, 1941 · Japanese victory
- Japanese declaration of war on the United States and the British Empire December 8, 1941
- United States declaration of war on Japan December 8, 1941
- British declaration of war on Japan December 8, 1941
- Dutch East Indies campaign December 8, 1941 – March 9, 1942 · Japanese victory
  - Battle of the Java Sea February 27, 1942 · Japanese victory
  - Battle of Java (1942) February 28 – March 12, 1942 · Japanese victory
- Burma campaign December 14, 1941 – September 13, 1945 · Allied victory
  - Japanese invasion of Burma December 14, 1941 – May 1942 · Japanese victory
  - Burma campaign (1942–1943) June 1942 – September 1943 · Axis victory
  - Arakan campaign (1942–1943) December 1942 – May 1943 · Japanese victory
  - Battle of Northern Burma and Western Yunnan October 1943 – March 1945 · Allied victory
  - Battle of the Admin Box February 5–23, 1944 · Allied victory
  - Operation U-Go March 1944 – June 1944 · British victory
  - Battle of Imphal March 8 – July 3, 1944 · British victory
  - Battle of Kohima April 4 – June 22, 1944 · Allied victory
  - Siege of Myitkyina May 17 – August 3, 1944 · Allied victory
  - Burma campaign (1944–1945) November 1944 – August 7, 1945 · Allied victory
  - Burma campaign (1944) November 1944 · Allied victory
  - Battle of Meiktila and Mandalay January 1 – March 29, 1945 · Allied victory
  - Battle of Ramree Island January 14 – February 22, 1945 · British victory
  - Battle of Hill 170 January 22–31, 1945 · British victory
  - Battle of the Sittang Bend July 2 – August 7, 1945 · British victory
- Battle of Borneo (1941–1942) December 16, 1941 – April 1, 1942 · Japanese victory
- Battle of Corregidor December 29, 1941 – May 6, 1942 · Japanese victory
- Solomon Islands campaign January 1942 – August 21, 1945 · Allied victory
  - Battle of Tulagi and Gavutu–Tanambogo August 7–9, 1942 · Allied victory
  - Operation Vengeance April 18, 1943
- Battle of Bataan January 7 – April 9, 1942 · Japanese victory
- Battle of Manado January 11–12, 1942 · Japanese victory
- Battle of Balikpapan (1942) January 23–24, 1942 · Japanese victory
- New Guinea campaign January 23, 1942 – August 1945 · Allied victory
  - Battle of the Coral Sea May 4–8, 1942
  - Kokoda Track campaign July 21 – November 16, 1942 · Allied victory
  - Battle of Milne Bay August 25 – September 7, 1942 · Allied victory
  - Battle of Buna–Gona November 16, 1942 – January 22, 1943 · Allied victory
  - Battle of Wau January 29–31, 1943 · Allied victory
  - Battle of Hollandia April 22 – June 6, 1944 · Allied victory
  - Western New Guinea campaign April 22, 1944 – August 15, 1945 · Allied victory
  - Battle of Driniumor River July 10 – August 25, 1944 · Allied victory
- Marshalls–Gilberts raids February 1, 1942 · Minor damage to Japanese garrisons
- Battle of Singapore February 8–15, 1942 · Japanese victory
  - Battle of Kranji February 9–10, 1942 · Japanese victory
  - Battle of Bukit Timah February 10–12, 1942 · Japanese victory
  - Battle of Pasir Panjang February 13–14, 1942 · Japanese victory
- Battle of Palembang February 13–15, 1942 · Japanese victory
- Invasion of Sumatra February 14 – March 28, 1942 · Japanese victory
- Battle of Badung Strait February 18–20, 1942 · Japanese victory
- Operation K March 4, 1942 · Inconclusive
- Invasion of Salamaua–Lae March 13, 1942 · Japanese victory
- Indian Ocean raid March 31 – April 10, 1942 · Japanese victory
- Battle of Christmas Island March 31 – April 1, 1942 · Japanese victory
- Japan campaign April 18, 1942 – September 2, 1945 · Allied victory
  - Air raids on Japan August 15, 1939 – August 15, 1945 · Allied victory
  - Volcano and Ryukyu Islands campaign February 19 – June 21, 1945 · Allied victory
- Invasion of Tulagi (May 1942) May 3–4, 1942 · Japanese victory
- Battle of the Coral Sea May 4–8, 1942
- Aleutian Islands campaign June 3, 1942 – August 15, 1943 · Allied victory
  - Japanese occupation of Kiska June 6, 1942 – July 28, 1943 · Japanese victory
  - Battle of the Pips May 27 – July 29, 1943
- Battle of Midway June 4–7, 1942 · American victory
- Kokoda Track campaign July 21 – November 16, 1942 · Allied victory
- Guadalcanal campaign August 7, 1942 – February 9, 1943 · Allied victory
  - Battle of Tulagi and Gavutu–Tanambogo August 7–9, 1942 · Allied victory
  - Battle of the Tenaru August 21, 1942 · Allied victory
  - Battle of the Eastern Solomons August 24–25, 1942 · American victory
  - Battle of Edson's Ridge September 12–14, 1942 · Allied victory
  - Actions along the Matanikau September 23 – October 9, 1942 · September action: Japanese victory; October action: American victory
  - Battle of the Santa Cruz Islands October 25–27, 1942
  - Battle of Tassafaronga November 30, 1942 · Japanese victory
  - Carlson's patrol December 4, 1942 · Allied victory
  - Operation Ke January 14 – February 7, 1943 · Japanese victory
  - Battle of Rennell Island January 29–30, 1943 · Japanese victory
- Raid on Makin Island August 17–18, 1942 · American victory
- Battle for Henderson Field October 23–26, 1942 · American victory
- Battle of the Santa Cruz Islands October 25–27, 1942
- Matanikau Offensive November 1–4, 1942 · United States victory
- Koli Point action November 3–12, 1942 · Allied victory
- Naval Battle of Guadalcanal November 13–15, 1942 · American victory
- Battle of Mount Austen, the Galloping Horse, and the Sea Horse December 15, 1942 – January 23, 1943 · Allied victory
- Battle of the Bismarck Sea March 2–4, 1943 · Allied victory
- Battle of Blackett Strait March 6, 1943 · American victory
- Battle of the Komandorski Islands March 27, 1943 · American victory
- Salamaua–Lae campaign April 22 – September 16, 1943 · Allied victory
- Battle of Attu May 11–30, 1943 · Allied victory
- Convoy GP55 June 15–20, 1943 · Japanese victory
- Operation Cartwheel June 30, 1943 – March 20, 1944 · Allied victory
  - Operation Chronicle June 23–30, 1943 · Allied occupation
  - Landing on Emirau March 20–27, 1944 · Unopposed
- Battle of Kula Gulf July 6, 1943 · Inconclusive
- Battle of Kolombangara July 12–13, 1943
- Battle off Horaniu August 17–18, 1943
- Landing at Nadzab September 5, 1943 · Allied victory
- Huon Peninsula campaign September 22, 1943 – March 1, 1944 · Allied victory
- Battle of Vella Lavella (naval) October 6, 1943 · Japanese victory
- Bougainville campaign November 1, 1943 – August 21, 1945 · Allied victory
  - Bougainville counterattack March 8–25, 1944 · Allied victory
- Gilbert and Marshall Islands campaign November 1943 – February 23, 1944 · Allied victory
  - Battle of Kwajalein January 31 – February 3, 1944 · American victory
  - Battle of Eniwetok February 17–23, 1944 · American victory
- Bombing of Rabaul (November 1943) November 2–11, 1943 · Allied victory
- Landings at Cape Torokina November 3, 1943 · Allied victory
- Raid on Choiseul November 3, 1943 · Indecisive
- Battle of the Treasury Islands November 12, 1943 · Allied victory
- Battle of Tarawa November 20–23, 1943 · Allied victory
- New Britain campaign December 15, 1943 – August 21, 1945 · Allied victory
- Battle of Arawe December 15, 1943 – February 24, 1944 · Allied victory
- Operation Matterhorn 1944
- Battle of the Green Islands January 29 – February 27, 1944 · Allied victory
- Operation Hailstone February 17–18, 1944 · American victory
- Indian Ocean raid (1944) March 1–16, 1944 · Inconclusive
- Operation Cockpit April 19, 1944 · Inconclusive
- Battle of Biak May 27 – August 17, 1944 · Allied victory
- Mariana and Palau Islands campaign June 1944 – November 1944 · American victory
- Battle of Saipan June 15 – July 9, 1944 · American victory
- Battle of the Philippine Sea June 19–20, 1944 · American victory
- Battle of Tinian July 24 – August 1, 1944 · American victory
- Operation Boomerang August 11, 1944
- Battle of Peleliu September 15 – November 27, 1944 · American victory
- Battle of Angaur September 15 – October 22, 1944 · American victory
- Battle of Morotai September 15 – October 4, 1944 · Allied victory
- Battle of Leyte October 17 – December 31, 1944 · Allied victory
- Philippines campaign (1944–1945) October 20, 1944 – August 15, 1945 · Allied victory
  - Battle of Leyte October 17 – December 31, 1944 · Allied victory
  - Battle of Mindoro December 13–16, 1944 · Allied victory
  - Battle of Luzon January 9 – August 15, 1945 · Allied victory
  - Battle of Baguio February 21 – April 26, 1945 · Allied victory
  - Invasion of Palawan February 28 – April 22, 1945 · Allied victory
  - Battle of Mindanao March 10 – August 15, 1945 · Allied victory
  - Battle of Visayas March 18 – July 30, 1945 · Allied victory
- Battle of Leyte Gulf October 23–26, 1944 · Allied victory
  - Battle off Samar October 25, 1944 · American victory
- Battle of Ormoc Bay November 11 – December 21, 1944 · American victory
- Battle of Luzon January 9 – August 15, 1945 · Allied victory
  - Invasion of Lingayen Gulf January 6–9, 1945 · Allied victory
- South China Sea raid January 20, 1945
- Battle of Manila (1945) February 3 – March 3, 1945 · Allied victory
- Bombing of Kobe in World War II February 4, 1945
- Operation Kita February 10–20, 1945 · Japanese victory
- Battle of Iwo Jima February 19 – March 26, 1945 · American victory
- Battle of Okinawa April 1 – June 22, 1945 · Allied victory
  - Operation Ten-Go April 7, 1945 · American victory
- Operation Starvation April 1945
- Operation Ten-Go April 7, 1945 · American victory
  - Operation Kikusui April 6 – June 22, 1945 · Allied victory
- Battle of Tarakan (1945) May 1 – June 21, 1945 · Allied victory
- Borneo campaign May 1 – August 15, 1945 · Allied victory
  - Battle of North Borneo June 10 – August 15, 1945 · Allied victory
- Battle of the Malacca Strait May 15–16, 1945 · British victory
- Battle of North Borneo June 10 – August 15, 1945 · Allied victory
  - Battle of Labuan June 10–21, 1945 · Allied victory
- Operation Inmate June 15, 1945 · Allied victory
- Battle of Balikpapan (1945) July 1, 1945 · Allied victory
- Soviet invasion of Manchuria August 9–20, 1945 · Soviet victory
  - Battle of Mutanchiang August 16, 1945
Battle of Stalingrad July 17, 1942 – February 2, 1943 · Soviet victory
- Operation Uranus November 19–23, 1942 · Soviet victory
- Operation Little Saturn December 12, 1942 – February 18, 1943 · Soviet victory
- Operation Winter Storm December 12–23, 1942 · Soviet victory
- Raid on Tatsinskaya December 18–28, 1942 · Soviet victory
- Operation Koltso January 10 – February 2, 1943 · Soviet victory
Battle of Kursk July 5 – August 23, 1943 · Soviet victory
- Operation Citadel July 1943 · Soviet victory
- Battle of Prokhorovka July 12, 1943
Operation Overlord June 6 – August 30, 1944 · Allied victory
- Normandy landings June 6 – August 29, 1944 · Allied victory
  - Operation Tonga June 5–7, 1944 · Allied victory
  - Capture of the Caen Canal and Orne River bridges June 6, 1944 · British victory
  - American airborne landings in Normandy June 6 – July 13, 1944 · Allied victory
  - Battle of Port-en-Bessin June 6–7, 1944 · Allied victory
  - Operation Mallard June 6, 1944 · British victory
- Battle for Caen June 6 – August 6, 1944 · Allied victory
  - Operation Perch June 7–14, 1944 · German victory
  - Operation Martlet June 25 – July 1, 1944 · Allied victory
  - Operation Epsom June 26–30, 1944
  - Operation Windsor July 4–5, 1944 · Canadian victory
  - Operation Charnwood July 8–9, 1944 · Allied victory
  - Operation Jupiter (1944) July 10–11, 1944 · British victory
  - Operation Goodwood July 18–20, 1944
  - Operation Atlantic July 18–21, 1944
- Battle of Cherbourg June 6–30, 1944 · Allied victory
- Invasion of Normandy June 6, 1944 – July 1944 · Allied victory
  - Normandy landings June 6 – August 29, 1944 · Allied victory
  - Battle of Ushant (1944) June 9, 1944 · Allied victory
- Mission Boston June 6, 1944
- Battle of Carentan June 10–14, 1944 · American victory
- Raid on La Caine June 10, 1944 · Allied victory
- Battle of Bréville June 13, 1944 · British Victory
- Operation Spring July 25–27, 1944 · German victory
- Operation Bluecoat July 30 – August 7, 1944 · Allied victory
- Battle for Brest August 7 – September 19, 1944 · Allied victory
- Operation Totalize August 8–13, 1944 · Allied victory
- Falaise pocket August 12–21, 1944 · Allied victory
- Operation Tractable August 14–21, 1944 · Allied victory
- Liberation of Paris August 19–25, 1944 · Free French and allied victory
Battle of the Bulge December 16, 1944 – January 25, 1945 · Allied victory
- Operation Stösser December 17–21, 1944 · German operational failure
- Siege of Bastogne December 20–27, 1944 · American victory
- Battle of St. Vith December 21, 1944 · German victory

1937 1 event

Second Sino-Japanese War July 7, 1937 – September 2, 1945 · Chinese victory
- Counterinsurgency in Manchuria November 4, 1931 – 1941 · Japanese-Manchukuo victory
- Battle of Beiping–Tianjin August 1937 · Japanese victory
- Tianjin–Pukou Railway Operation August 1937 – November 1937 · Japanese victory
- Operation Chahar August 1937 · Japanese victory
- Battle of Shanghai August 13 – November 26, 1937 · Japanese victory
  - Defense of Sihang Warehouse October 26 – November 1, 1937 · Withdrawal of Chinese forces to the Shanghai International Settlement on 31 October 1937
- Battle of Taiyuan September 1 – November 9, 1937 · Japanese victory
- Battle of Xinkou September 13 – November 11, 1937 · Japanese victory
- Battle of Pingxingguan September 24–25, 1937 · Japanese victory
- Battle of Xuzhou December 1, 1937 – May 19, 1938 · Japanese victory
- Battle of Nanking December 1–13, 1937 · Japanese victory
  - Hundred man killing contest 1937
- USS Panay incident December 12, 1937 · Japanese victory
- Nanjing Massacre December 13, 1937 – February 7, 1938
- Bombing of Chongqing February 18, 1938 – August 23, 1943
- Battle of Taierzhuang March 24 – April 7, 1938 · Chinese victory
- Amoy Operation May 10–12, 1938 · Japanese victory
- 1938 Yellow River flood June 1938
- Battle of Wuhan June 11 – October 27, 1938 · Japanese victory
- Canton Operation October 1938 – December 1938 · Japanese victory
- Battle of Wanjialing October 11, 1938 · Chinese victory
- Hainan Island Operation February 1939 · Japanese victory
- Battle of Nanchang May 9, 1939 · Japanese victory
- Battle of Suixian–Zaoyang May 24, 1939 · Chinese victory
- Battle of Changsha (1939) September 17 – October 6, 1939 · Chinese victory
- 1939–1940 Winter Offensive November 1939 – March 1940 · Japanese victory
- Battle of South Guangxi November 15, 1939 – November 30, 1940 · Japanese withdrawal from Nanning after the successful invasion of French Indochina
- Battle of Kunlun Pass December 18, 1939 – January 11, 1940 · Chinese victory
- Battle of Wuyuan March 16 – April 3, 1940 · Chinese victory
- Battle of Zaoyang–Yichang May 1 – June 24, 1940 · Japanese victory
- Hundred Regiments Offensive August 20 – December 5, 1940 · Chinese victory
- Japanese invasion of French Indochina September 22–26, 1940 · Japanese victory
- Battle of South Henan January 30 – March 1, 1941 · Chinese victory
- Battle of Shanggao March 14 – April 9, 1941 · Chinese victory
- Battle of South Shanxi May 7–27, 1941 · Japanese victory
- Battle of Changsha (1941) September 6 – October 8, 1941
- Proposed Japanese invasion of Sichuan 1942 · Chinese victory
- Battle of Changsha (1941–1942) January 15, 1942 · Chinese victory
- Battle of the Yunnan–Burma Road March 1942 – June 1942 · Axis victory
  - Battle of Toungoo March 30, 1942 · Japanese victory
  - Battle of Yenangyaung April 19, 1942 · Japanese victory
- Zhejiang-Jiangxi campaign May 15 – September 6, 1942
- Battle of West Hubei May 12 – June 3, 1943 · Chinese victory
- Battle of Northern Burma and Western Yunnan October 1943 – March 1945 · Allied victory
  - Battle of Mount Song June 4 – September 7, 1944 · Allied victory
- Battle of Changde November 2 – December 20, 1943 · Chinese victory
- Operation Ichi-Go April 17 – December 10, 1944 · Japanese victory
  - Battle of Guilin–Liuzhou August 16 – November 24, 1944 · Japanese victory
- Battle of West Henan–North Hubei March 21 – May 11, 1945 · Stalemate
- Second Guangxi campaign April 1945 – August 4, 1945 · Chinese victory
- Battle of West Hunan April 6 – June 7, 1945 · Chinese victory

1939 18 events

World War II in Albania 1939 – 1944 · LANÇ victory
Battles of Khalkhin Gol May 11 – September 16, 1939 · Soviet–Mongolian victory
Invasion of Poland September 1 – October 6, 1939 · German–Soviet victory
- Battle of Westerplatte September 1–7, 1939 · German victory
- Battle of Danzig Bay September 1, 1939 · German victory
- Bombing of Warsaw in World War II September 1–27, 1939
- Battle of the Border September 1939 · German victory
  - Battle of Mława September 1–3, 1939 · German victory
  - Charge at Krojanty September 1, 1939 · German victory
  - Battle of Tuchola Forest September 1–5, 1939 · German victory
  - Battle of Mokra September 1, 1939 · Polish victory
  - Battle of Lasy Królewskie September 1, 1939 · Inconclusive
  - Battle of Chojnice (1939) September 1, 1939 · German victory
  - Battle of Węgierska Górka September 1–3, 1939 · German victory
- Slovak invasion of Poland September 1–16, 1939 · Slovak victory
- Defence of the Polish Post Office in Danzig September 1, 1939 · Danzig/German victory
- Bombing of Wieluń September 1, 1939
- Battle of Mława September 1–3, 1939 · German victory
- Battle of Borowa Góra September 2–6, 1939 · German victory
- Battle of Tomaszów Mazowiecki September 6, 1939 · German victory
- Battle of Wizna September 7–10, 1939 · German victory
- Battle of Łomża (1939) September 7–10, 1939 · German victory
- Siege of Warsaw (1939) September 8–28, 1939 · German victory
- Battle of Radom September 8–9, 1939 · German victory
- Battle of the Bzura September 9–19, 1939 · German victory
- Battle of Hel September 9 – October 2, 1939 · German victory
- Battle of Modlin September 13–29, 1939 · German victory
- Battle of Kobryń September 14–18, 1939 · Inconclusive
- Battle of Wilno (1939) September 18–19, 1939 · Soviet victory
- Battle of Grodno (1939) September 20–24, 1939 · Soviet victory
- Battle of Szack September 28, 1939 · Polish victory
- Battle of Wytyczno October 1, 1939 · Soviet victory
- Battle of Kock (1939) October 2–5, 1939 · German victory
Battle of Mława September 1–3, 1939 · German victory
Operation Tannenberg September 1939 – January 1940
European theatre of World War II September 1, 1939 – May 8, 1945 · Allied victory
- Invasion of Poland September 1 – October 6, 1939 · German–Soviet victory
  - Battle of Westerplatte September 1–7, 1939 · German victory
  - Battle of Danzig Bay September 1, 1939 · German victory
  - Bombing of Warsaw in World War II September 1–27, 1939
  - Battle of the Border September 1939 · German victory
  - Slovak invasion of Poland September 1–16, 1939 · Slovak victory
  - Defence of the Polish Post Office in Danzig September 1, 1939 · Danzig/German victory
  - Bombing of Wieluń September 1, 1939
  - Battle of Mława September 1–3, 1939 · German victory
  - Battle of Borowa Góra September 2–6, 1939 · German victory
  - Battle of Tomaszów Mazowiecki September 6, 1939 · German victory
  - Battle of Wizna September 7–10, 1939 · German victory
  - Battle of Łomża (1939) September 7–10, 1939 · German victory
  - Siege of Warsaw (1939) September 8–28, 1939 · German victory
  - Battle of Radom September 8–9, 1939 · German victory
  - Battle of the Bzura September 9–19, 1939 · German victory
  - Battle of Hel September 9 – October 2, 1939 · German victory
  - Battle of Modlin September 13–29, 1939 · German victory
  - Battle of Kobryń September 14–18, 1939 · Inconclusive
  - Battle of Wilno (1939) September 18–19, 1939 · Soviet victory
  - Battle of Grodno (1939) September 20–24, 1939 · Soviet victory
  - Battle of Szack September 28, 1939 · Polish victory
  - Battle of Wytyczno October 1, 1939 · Soviet victory
  - Battle of Kock (1939) October 2–5, 1939 · German victory
- Defence of the Reich September 4, 1939 – May 8, 1945 · Allied victory
  - Battle of the Heligoland Bight (1939) December 18, 1939
- Case Anton November 10–27, 1942 · German and Italian victory
  - Scuttling of the French fleet at Toulon November 27, 1942
- Battle of Aachen October 2–21, 1944 · American victory
- Prague offensive May 6–11, 1945 · Allied victory
Battle of the Atlantic September 3, 1939 – May 8, 1945 · Allied victory
- Battle of the Caribbean 1941 – 1945 · Allied victory
- Operation Rheinübung May 18–27, 1941
  - Last battle of Bismarck May 26–27, 1941 · Allied victory
- Battle of the Denmark Strait May 24, 1941 · German victory
- Second Happy Time January 14 – August 31, 1942
- Channel Dash February 13, 1942 · German victory
- Operation Neuland March 1942 · Axis victory
- St Nazaire Raid March 28, 1942 · British victory
- Black May (World War II) April 29 – May 24, 1943 · British victory
- Battle of Sept-Îles October 22–23, 1943 · German victory
- Battle of the Bay of Biscay December 28, 1943 · British victory
- Operation Obviate October 29, 1944 · Inconclusive
- Operation Catechism November 12, 1944 · British victory
British declaration of war on Germany (1939) September 3, 1939
French declaration of war on Germany (1939) September 3, 1939
Saar Offensive September 7–16, 1939 · German victory
Siege of Warsaw (1939) September 8–28, 1939 · German victory
Battle of Hel September 9 – October 2, 1939 · German victory
Battle of Lwów (1939) September 12–22, 1939 · German–Soviet victory
Battle of Brześć Litewski September 14–17, 1939 · German victory
Battle of Tomaszów Lubelski September 17–26, 1939 · German victory
Soviet invasion of Poland September 17 – October 6, 1939 · Soviet victory
Winter War November 30, 1939 – March 13, 1940 · Moscow Peace Treaty
- Battle of Petsamo November 30, 1939 – March 12, 1940 · Soviet victory
- Battle of Salla (1939) November 30, 1939 – February 28, 1940 · Finnish victory
- Battle of Taipale December 6–27, 1939 · Finnish victory
- Battle of Suomussalmi December 7, 1939 – January 8, 1940 · Finnish victory
  - Battle of Raate Road January 1–7, 1940 · Finnish victory
- Battle of Kollaa December 7, 1939 – March 13, 1940 · Finnish victory
- Battle of Tolvajärvi December 12, 1939 · Finnish victory
- Battle of Summa December 16, 1939 – February 15, 1940 · First battle: Finnish victory Second battle: Soviet victory
- Battle of Kelja December 25–27, 1939 · Finnish victory
- Battle of Kuhmo January 4–7, 1940 · Stalemate
- Battle of Honkaniemi February 25–27, 1940 · Soviet victory
Battle of the River Plate December 13, 1939 · Allied victory

1940 48 events

Norwegian heavy water sabotage 1940 – 1944 · Allied victory
Altmark incident February 16, 1940 · British victory
Operation Wikinger February 19, 1940
Katyn massacre April 1940 – May 31, 1940
Operation Weserübung April 9 – June 10, 1940 · German victory
- Battle of Drøbak Sound April 9, 1940
Norwegian campaign April 9 – June 10, 1940 · German victory
- Namsos campaign April 1940 – May 1940 · German victory
- Åndalsnes landings April 1940 – May 1940 · German victory
- Battle of Drøbak Sound April 9, 1940
- Operation Weserübung April 9 – June 10, 1940 · German victory
  - Battle of Drøbak Sound April 9, 1940
- Battles of Narvik April 9 – June 8, 1940 · German victory
- Battle of Dombås April 14–19, 1940
German invasion of Denmark (1940) April 9, 1940 · German victory
German occupation of Norway April 9, 1940 – May 8, 1945
- Operation Claymore March 4, 1941 · British-Norwegian victory
- Operation Anklet December 26–27, 1941 · Allied victory
- Operation Nordlicht (1944–1945) September 1944 – February 1945
Action off Lofoten April 9, 1940
Battle of Midtskogen April 10, 1940 · Norwegian victory
British occupation of the Faroe Islands April 13, 1940 – May 13, 1945 · Unopposed British landing
Battle of Vinjesvingen May 3–5, 1940
Battle of France May 10 – June 25, 1940 · Axis victory
- German invasion of the Netherlands May 10–15, 1940 · German victory
  - Battle of the Grebbeberg May 11–13, 1940 · German victory
  - German bombing of Rotterdam May 14, 1940
- German invasion of Belgium (1940) May 10–28, 1940 · German victory
  - Battle of Fort Eben-Emael May 10–11, 1940 · German victory
  - Battle of the Lys (1940) May 23–28, 1940 · German victory
- Battle of Zeeland May 10–18, 1940 · German victory
- Battle of Sedan (1940) May 13, 1940 · German victory
- Battle of Boulogne May 22–25, 1940 · German victory
- Battle of Dunkirk May 26 – June 4, 1940
- Dunkirk evacuation May 26 – June 4, 1940 · Successful retreat
- Siege of Lille (1940) May 28–31, 1940
- Italian invasion of France June 10–25, 1940 · Armistice of Villa Incisa
German invasion of the Netherlands May 10–15, 1940 · German victory
- Battle of the Grebbeberg May 11–13, 1940 · German victory
- German bombing of Rotterdam May 14, 1940
German invasion of Belgium (1940) May 10–28, 1940 · German victory
- Battle of Fort Eben-Emael May 10–11, 1940 · German victory
- Battle of the Lys (1940) May 23–28, 1940 · German victory
Battle of the Hague (1940) May 10, 1940
Battle of Hannut May 12–14, 1940
Battle of the Afsluitdijk May 12–14, 1940 · Dutch victory
Battle of Gembloux (1940) May 14–15, 1940 · French victory
Battle of Montcornet May 17, 1940 · French victory
Battle of Arras (1940) May 21, 1940 · German victory
Siege of Calais (1940) May 22–26, 1940 · German victory
Battle of Dunkirk May 26 – June 4, 1940
Dunkirk evacuation May 26 – June 4, 1940 · Successful retreat
Battle of Abbeville June 4, 1940 · German victory
North African campaign June 10, 1940 – May 16, 1943 · Allied victory
- Western Desert campaign June 11, 1940 – February 4, 1943 · Allied victory
  - Italian invasion of Egypt September 9–16, 1940 · Italian victory
  - Siege of Giarabub December 1940 – March 21, 1941 · Commonwealth victory
  - Operation Compass December 9, 1940 – February 9, 1941 · British victory
  - Battle of Sidi Barrani December 10–11, 1940 · British victory
  - Capture of Kufra January 31 – March 1, 1941 · Allied victory
  - Operation Sonnenblume February 6 – May 25, 1941 · Axis victory
  - Siege of Tobruk April 10 – November 27, 1941 · Allied victory
  - Operation Brevity May 15–16, 1941 · Inconclusive
  - Operation Skorpion May 26–27, 1941 · German victory
  - Operation Flipper November 10–18, 1941 · Axis victory
  - Battle of Gazala May 26 – June 21, 1942 · Axis victory
  - Axis capture of Tobruk June 21, 1942 · Axis victory
  - Battle of Mersa Matruh June 29, 1942 · German–Italian victory
  - First Battle of El Alamein July 1–27, 1942 · Stalemate
  - Raid on Sidi Haneish Airfield July 27, 1942 · Allied victory
  - Battle of Alam el Halfa August 30 – September 5, 1942 · British victory
  - Operation Agreement September 13–14, 1942 · Axis victory
  - Second Battle of El Alamein October 23 – November 11, 1942 · Allied victory
- Operation Battleaxe June 15–17, 1941 · Axis victory
- Operation Crusader November 18 – December 30, 1941 · Allied victory
  - Action at Bir el Gubi (November 1941) November 19, 1941 · Italian victory
  - Battle of Point 175 November 29 – December 1, 1941 · Italian victory
  - Action at Bir el Gubi (December 1941) December 4–7, 1941 · Axis victory
- Sonderkommando Blaich January 21, 1942 · Axis victory
- Tunisian campaign November 17, 1942 – May 13, 1943 · Allied victory
  - Run for Tunis November 10 – December 25, 1942 · Axis victory
  - Battle of Sidi Bou Zid February 14–17, 1943 · German victory
  - Battle of Kasserine Pass February 19–25, 1943
  - Operation Ochsenkopf February 26 – March 4, 1943 · Allied victory
  - Battle of Medenine March 6, 1943 · Allied victory
  - Battle of the Mareth Line March 16–31, 1943 · British victory
  - Battle of El Guettar March 23, 1943 · Indecisive
  - Battle of Wadi Akarit April 6–7, 1943 · Allied victory
  - Battle of Longstop Hill April 22–23, 1943 · British victory
  - Battle of Hill 609 April 27 – May 1, 1943 · American victory
  - Operation Flax April 27, 1943 · Allied victory
  - Operation Retribution May 8–13, 1943 · Allied victory
East African campaign (World War II) June 10, 1940 – November 27, 1941 · Allied victory
- Northern front, East Africa, 1940 June 10, 1940 – January 17, 1941 · British victory
- Battle of Agordat (1941) January 26–31, 1941 · British victory
- Battle of Keren February 5 – April 1, 1941 · Allied victory
- Battle of Gondar November 13–27, 1941 · Allied victory
Mediterranean and Middle East theatre of World War II June 10, 1940 – May 2, 1945 · Allied victory
- Adriatic campaign of World War II April 1939 – May 1945 · Allied victory
  - Action of 1 November 1944 1944 · British victory
  - Battle of Ist February 29, 1944 · Free French victory
- North African campaign June 10, 1940 – May 16, 1943 · Allied victory
  - Western Desert campaign June 11, 1940 – February 4, 1943 · Allied victory
  - Operation Battleaxe June 15–17, 1941 · Axis victory
  - Operation Crusader November 18 – December 30, 1941 · Allied victory
  - Sonderkommando Blaich January 21, 1942 · Axis victory
  - Tunisian campaign November 17, 1942 – May 13, 1943 · Allied victory
- Battle of the Mediterranean June 10, 1940 – May 2, 1945 · Allied victory
  - Battle of the Espero Convoy June 28, 1940
  - Battle of Cape Spada July 19, 1940 · British victory
  - Operation Hurry July 31 – August 4, 1940 · British victory
  - Action off Cape Passero October 12, 1940 · British victory
  - Operation MB 8 November 4–11, 1940 · British victory
  - Action in the Strait of Otranto November 12, 1940 · British victory
  - Operation Excess January 10–11, 1941 · British victory
  - Operation Abstention February 25–28, 1941 · Italian victory
  - Raid on Souda Bay March 26, 1941 · Italian victory
  - Battle of Cape Matapan March 27–29, 1941 · Allied victory
  - Battle of the Tarigo Convoy April 16, 1941 · British victory
  - Operation Substance July 28, 1941 · British victory
  - Mediterranean U-boat campaign of World War II September 21, 1941 · Allied victory
  - Operation Halberd September 27, 1941 · British victory
  - Battle of the Duisburg Convoy November 9, 1941 · British victory
  - Battle of Cape Bon (1941) December 13, 1941 · Allied victory
  - First Battle of Sirte December 17, 1941 · Inconclusive
  - Second Battle of Sirte March 22, 1942
  - Operation Harpoon (1942) June 12–15, 1942 · Italian–German victory
  - Operation Vigorous June 16, 1942 · Italian–German victory
  - Operation Pedestal August 3–15, 1942
  - Battle of Skerki Bank December 2, 1942 · British victory
  - Raid on Algiers December 11, 1942 · Italian victory
  - Battle of the Cigno Convoy April 16, 1943 · Italian victory
  - Raid on Santorini April 24, 1944 · Allied victory
  - Operation Dragoon August 15 – September 14, 1944 · Allied victory
  - Battle of the Ligurian Sea March 18, 1945 · British victory
- Siege of Malta (World War II) June 11, 1940 – November 20, 1942 · Allied victory
  - Operation Excess January 10–11, 1941 · British victory
- Bombing of Bahrain in World War II October 19, 1940 · Italian victory
- Anglo-Iraqi War May 2–31, 1941 · Allied victory
- Syria–Lebanon campaign June 8 – July 14, 1941 · Allied victory
  - Battle of the Litani River June 9, 1941 · British commonwealth victory
  - Battle of Jezzine (1941) June 13, 1941 · Australian victory
  - Battle of Kissoué June 15–17, 1941 · Allied victory
  - Battle of Damascus (1941) June 18–21, 1941 · Allied victory
  - Battle of Palmyra (1941) July 1, 1941 · British-Jordanian victory
  - Battle of Deir ez-Zor (1941) July 3, 1941 · Allied victory
  - Battle of Beirut (1941) July 12, 1941 · Allied victory
- Anglo-Soviet invasion of Iran August 25 – September 17, 1941 · Anglo-Soviet victory
- Raid on Alexandria (1941) December 19, 1941 · Italian victory
- Operation Mammoth June 15–29, 1943 · Operation failure
- Italian campaign July 9, 1943 – May 2, 1945 · Allied victory
  - Allied invasion of Sicily July 9 – August 17, 1943 · Allied victory
  - Battle of Troina July 31 – August 6, 1943 · Allied victory
  - Allied invasion of Italy September 3–16, 1943 · Allied victory
  - Armistice of Cassibile September 3, 1943
  - Operation Achse September 8–19, 1943 · Axis victory
  - Gran Sasso raid September 12, 1943
  - Four Days of Naples September 30, 1943 · Resistance victory
  - Air raid on Bari December 2, 1943 · German victory
  - Battle of Monte la Difensa December 3–9, 1943 · Allied victory
  - Moro River campaign December 4–26, 1943
  - Battle of San Pietro Infine December 8–17, 1943 · Allied victory
  - Battle of Monte Cassino January 17 – May 18, 1944 · Allied victory
  - Battle of Anzio January 22 – June 4, 1944 · Allied victory
  - Battle of Ancona June 16 – July 18, 1944 · Allied victory
  - Invasion of Elba June 17–19, 1944 · Allied victory
  - Operation Olive August 25 – December 31, 1944 · Inconclusive
  - Bombing of Gorla October 20, 1944
  - Battle of Monte Castello November 25, 1944 – February 21, 1945 · Allied victory
  - Battle of Garfagnana December 26–28, 1944 · Axis victory
  - Spring 1945 offensive in Italy April 6 – May 2, 1945 · Allied victory
- Dodecanese campaign September 8 – November 22, 1943 · German victory
  - Battle of Leros September 26 – November 16, 1943 · German victory
  - Battle of Kos (1943) October 3–4, 1943 · German victory
Western Desert campaign June 11, 1940 – February 4, 1943 · Allied victory
- Italian invasion of Egypt September 9–16, 1940 · Italian victory
- Siege of Giarabub December 1940 – March 21, 1941 · Commonwealth victory
- Operation Compass December 9, 1940 – February 9, 1941 · British victory
  - Attack on Nibeiwa December 9, 1940 · British victory
  - British capture of Tobruk January 21–22, 1941 · Allied victory
  - Action at Mechili January 24, 1941 · British victory
  - Battle of Beda Fomm February 6–7, 1941 · British victory
- Battle of Sidi Barrani December 10–11, 1940 · British victory
- Capture of Kufra January 31 – March 1, 1941 · Allied victory
- Operation Sonnenblume February 6 – May 25, 1941 · Axis victory
- Siege of Tobruk April 10 – November 27, 1941 · Allied victory
  - Raid on Bardia April 19–20, 1941 · Allied victory
  - Twin Pimples raid July 17–18, 1941 · British victory
- Operation Brevity May 15–16, 1941 · Inconclusive
- Operation Skorpion May 26–27, 1941 · German victory
- Operation Flipper November 10–18, 1941 · Axis victory
- Battle of Gazala May 26 – June 21, 1942 · Axis victory
  - Battle of Bir Hakeim May 26 – June 11, 1942
- Axis capture of Tobruk June 21, 1942 · Axis victory
- Battle of Mersa Matruh June 29, 1942 · German–Italian victory
- First Battle of El Alamein July 1–27, 1942 · Stalemate
- Raid on Sidi Haneish Airfield July 27, 1942 · Allied victory
- Battle of Alam el Halfa August 30 – September 5, 1942 · British victory
- Operation Agreement September 13–14, 1942 · Axis victory
- Second Battle of El Alamein October 23 – November 11, 1942 · Allied victory
  - Defence of Outpost Snipe October 26–27, 1942 · British victory
Siege of Malta (World War II) June 11, 1940 – November 20, 1942 · Allied victory
- Operation Excess January 10–11, 1941 · British victory
Operation Collar (commando raid) June 24–25, 1940 · Inconclusive
Soviet occupation of Bessarabia and Northern Bukovina June 28 – July 3, 1940 · Soviet victory
German occupation of the Channel Islands June 30, 1940 – May 9, 1945
Battle of Calabria July 9, 1940 · Inconclusive
Battle of Britain July 10 – October 31, 1940 · British victory
- Adlertag August 13, 1940 · British victory
- Battle of Britain Day September 15, 1940 · British victory
Operation Ambassador July 14–15, 1940 · British failure
Operation Hurry July 31 – August 4, 1940 · British victory
The Blitz September 7, 1940 – May 21, 1941 · Axis strategic failure
- Coventry Blitz 1940 – 1942 · Coventry city centre severely damaged by German air raids
- Second Great Fire of London December 29–30, 1940
- Belfast Blitz 1941
Italian bombing of Mandatory Palestine in World War II September 9, 1940 · German victory
Battle of Dakar September 23–25, 1940 · Vichy French victory
Franco-Thai War October 1940 – May 9, 1941 · Indecisive
- Battle of Ko Chang January 16–17, 1941 · French victory
Balkans campaign (World War II) October 28, 1940 – June 1, 1941 · Axis victory
- Greco-Italian War October 28, 1940 – April 23, 1941
  - Battle of Pindus October 28 – November 13, 1940 · Greek victory
  - Battle of Elaia–Kalamas November 2–8, 1940 · Greek victory
  - Battle of Himara December 13–22, 1940 · Capture of Himara
  - Capture of Klisura Pass January 6–11, 1941 · Greek victory
  - Italian spring offensive March 9–16, 1941 · Greek victory
- German invasion of Greece April 1941 – April 30, 1941 · Axis victory
  - Battle of Thermopylae (1941) April 24–25, 1941 · Inconclusive
- Battle of Crete May 20 – June 1, 1941 · Axis victory
Battle of Gabon November 7–12, 1940 · Free French victory
Battle of Taranto November 11–12, 1940 · British victory
Action in the Strait of Otranto November 12, 1940 · British victory
Battle of Cape Spartivento November 27, 1940 · Inconclusive
Operation Compass December 9, 1940 – February 9, 1941 · British victory
- Attack on Nibeiwa December 9, 1940 · British victory
- British capture of Tobruk January 21–22, 1941 · Allied victory
- Action at Mechili January 24, 1941 · British victory
- Battle of Beda Fomm February 6–7, 1941 · British victory
1940–1944 insurgency in Chechnya December 20, 1940 – December 15, 1944 · Deportation of Chechens and Ingushes

1941 41 events

Battle of Bardia January 3–5, 1941 · Allied victory
Battle of Keren February 5 – April 1, 1941 · Allied victory
Operation Colossus February 10, 1941
Clydebank Blitz March 1941 · Clydebank largely destroyed by German air raids
Axis occupation of Greece April 1941 – October 1944
- Operation Harling November 25, 1942 · Allied victory
German invasion of Greece April 1941 – April 30, 1941 · Axis victory
- Battle of Thermopylae (1941) April 24–25, 1941 · Inconclusive
Invasion of Yugoslavia April 6–18, 1941 · Axis victory
German bombing of Belgrade April 6, 1941
World War II in Yugoslavia April 6, 1941 – May 15, 1945 · Yugoslav Partisan–Allied victory
- June 1941 uprising in eastern Herzegovina June 23 – July 7, 1941 · Uprising suppressed
- Uprising in Serbia (1941) July 7, 1941 – December 1941 · German and Collaborationist victory
  - Battle of Loznica (1941) August 31, 1941 · Chetnik victory
- Uprising in Montenegro (1941) July 13, 1941 – December 1941
- Seven Enemy Offensives September 1941 – June 1944
  - Operation Schwarz May 15 – June 16, 1943 · Inconclusive
- Operation Uzice September 27 – November 29, 1941
- Battle of Novi Pazar November 1941 – December 1941 · Albanian victory
- Battle of Pljevlja December 1, 1941 · Italian victory
- Operation Mihailovic December 4–9, 1941 · German victory
- Operation Southeast Croatia January 15–23, 1942 · Partisan withdrawal
- Operation Prijedor February 18–27, 1942 · Axis victory
- Operation Trio April 20 – May 13, 1942
- Kozara Offensive June 10, 1942 – August 1942 · Axis victory
- Battle of Kupres (1942) July 28 – August 19, 1942 · Independent State of Croatia victory
- Operation Kugelblitz 1943 · German failure
- Battle of Zvornik July 4–5, 1943 · Successful capture of Zvornik by Partisan forces
- Niš operation 1944 · Allied victory
- Operation Draufgänger August 1, 1944 · Yugoslav Partisan victory
- Operation Rübezahl August 13–27, 1944
- Belgrade offensive September 15 – November 24, 1944 · Allied victory
- Stracin–Kumanovo operation October 8 – November 14, 1944 · Allied victory
- Battle of Knin November 7 – December 9, 1944 · Yugoslav Partisans victory
- Battle of Batina November 11–19, 1944 · Allied victory
- Kosovo Operation (1944) November 22, 1944 · Allied victory
- Mostar operation February 6–15, 1945 · Partisan victory
- Sarajevo Operation March 28 – April 10, 1945 · Partisan victory
- Battle of Lijevče Field March 30 – April 8, 1945 · Independent State of Croatia victory
- Battle of Odžak April 19 – May 25, 1945 · Partisan victory
- Race for Trieste April 30 – May 2, 1945 · Allied victory
Siege of Tobruk April 10 – November 27, 1941 · Allied victory
- Raid on Bardia April 19–20, 1941 · Allied victory
- Twin Pimples raid July 17–18, 1941 · British victory
Battle of Vevi (1941) April 11–12, 1941 · German victory
Middle East Theatre of World War II May 1941 – September 1941 · Allied victory
Battle of Amba Alagi (1941) May 4–19, 1941 · Allied victory
Battle of Crete May 20 – June 1, 1941 · Axis victory
Battle of Heraklion May 20, 1941 · German victory
Allied occupation of Iceland June 16, 1941
Operation Barbarossa June 22 – December 5, 1941 · Axis strategic failure
- June Uprising in Lithuania 1941
- Summer War 1941 · Estonian-German victory
- Defense of Brest Fortress June 1941 – June 29, 1941 · German victory
- Battle of Smolensk (1941) July 10 – September 10, 1941 · German victory
  - Siege of Mogilev July 3–26, 1941 · German victory
  - Yelnya offensive August 30 – September 8, 1941 · Soviet victory
- Battle of Kiev (1941) August 7 – September 26, 1941 · German victory
- Operation Beowulf September 6 – October 21, 1941 · German victory
- Roslavl–Novozybkov offensive September 12, 1941 · German victory
- Battle of Moscow October 2, 1941 – January 7, 1942 · Soviet victory
  - Battle of Bryansk October 2–21, 1941 · German victory
Eastern Front (World War II) June 22, 1941 – May 9, 1945 · Soviet victory
- Baltic Sea campaigns (1939–1945) 1939 – May 9, 1945 · Allied victory
- Defense of Brest Fortress June 1941 – June 29, 1941 · German victory
- Battle of Hanko (1941) June 22 – December 2, 1941 · Soviet troops evacuated by sea
- German declaration of war on the Soviet Union June 22, 1941
- Operation Barbarossa June 22 – December 5, 1941 · Axis strategic failure
  - June Uprising in Lithuania 1941
  - Summer War 1941 · Estonian-German victory
  - Defense of Brest Fortress June 1941 – June 29, 1941 · German victory
  - Battle of Smolensk (1941) July 10 – September 10, 1941 · German victory
  - Battle of Kiev (1941) August 7 – September 26, 1941 · German victory
  - Operation Beowulf September 6 – October 21, 1941 · German victory
  - Roslavl–Novozybkov offensive September 12, 1941 · German victory
  - Battle of Moscow October 2, 1941 – January 7, 1942 · Soviet victory
- Battle of Raseiniai June 23–27, 1941 · German victory
- Operation Silver Fox June 29 – November 17, 1941 · Allied victory
  - Operation Platinum Fox June 29 – September 21, 1941 · Soviet victory
  - Operation Arctic Fox July 1 – November 17, 1941 · Stalemate
- Operation München July 2–26, 1941 · Axis victory
- Baltic operation July 9, 1941
- Battle of Kiev (1941) August 7 – September 26, 1941 · German victory
- Siege of Odessa August 8 – October 16, 1941 · Axis victory
- Siege of Leningrad September 8, 1941 – January 27, 1944 · Soviet victory
  - Leningrad strategic defensive July 10 – September 30, 1941 · German victory
  - Demyansk Pocket January 7 – May 25, 1942 · German victory
  - Battle of Lyuban January 7 – April 30, 1942 · German victory
  - Battle of Someri July 8–9, 1942 · Finnish victory
  - Operation Iskra January 12–30, 1943 · Soviet victory
  - Operation Polar Star February 1943 – April 1943 · German victory
  - Leningrad–Novgorod offensive January 14 – March 1, 1944 · Soviet victory
- Battle of the Sea of Azov September 26 – October 11, 1941
- Battle of Vyazma–Bryansk October 1941 · German victory
- Battle of Bryansk October 2–21, 1941 · German victory
- Battle of Moscow October 2, 1941 – January 7, 1942 · Soviet victory
  - Battle of Bryansk October 2–21, 1941 · German victory
- Crimean campaign October 18, 1941 – July 4, 1942 · Axis victory
- First Battle of Kharkov October 20–24, 1941 · German victory
- Siege of Sevastopol (1941–1942) October 30, 1941 – July 4, 1942 · Axis victory
- Battles of Rzhev January 5, 1942 – March 21, 1943 · Inconclusive
  - Rzhev–Vyazma Offensive January 8 – April 20, 1942 · Inconclusive
  - Toropets–Kholm offensive February 6, 1942 · Soviet victory
  - Vyazma airborne operation February 28, 1942 · German victory
  - Operation "Seydlitz" July 2–23, 1942 · German victory
  - Battle of Rzhev, summer 1942 July 30 – October 1, 1942 · German victory
  - Battle of Velikiye Luki November 19, 1942 – January 16, 1943 · Soviet victory
  - Operation Mars November 25 – December 16, 1942 · German victory
- Yevpatoria assault January 8, 1942 · German victory
- Kholm Pocket January 23 – May 5, 1942 · German defensive victory
- Barvenkovo–Lozovaya offensive January 31, 1942 · Soviet victory
- Operation Bustard Hunt May 1942 · Axis victory
- Second Battle of Kharkov May 12–29, 1942 · Axis victory
- Defense of the Adzhimushkay quarry May 16 – November 30, 1942 · German victory
- Case Blue June 1 – November 24, 1942 · Soviet victory
- Battle of the Caucasus July 1942 – October 1943 · Soviet victory
- Battle of Stalingrad July 17, 1942 – February 2, 1943 · Soviet victory
  - Operation Uranus November 19–23, 1942 · Soviet victory
  - Operation Little Saturn December 12, 1942 – February 18, 1943 · Soviet victory
  - Operation Winter Storm December 12–23, 1942 · Soviet victory
  - Raid on Tatsinskaya December 18–28, 1942 · Soviet victory
  - Operation Koltso January 10 – February 2, 1943 · Soviet victory
- Operation Edelweiss July 23 – November 18, 1942 · Soviet victory
- Battle of Kalach July 23 – August 11, 1942 · German victory
- Kozelsk offensive September 9, 1942 · Soviet offensive defeated
- Operation Uranus November 19–23, 1942 · Soviet victory
- Operation Mars November 25 – December 16, 1942 · German victory
- Ostrogozhsk–Rossosh offensive January 13–27, 1943 · Soviet victory
- Voronezh–Kastornoye offensive January 24 – February 17, 1943 · Soviet victory
- Operation Gallop January 29 – February 18, 1943 · German victory
- Operation Winterzauber February 16 – March 31, 1943
- Third Battle of Kharkov February 19 – March 15, 1943 · German victory
- Voronezh–Kharkov offensive March 3, 1943 · Soviet victory
- Battle of Sokolovo March 8–13, 1943 · German advance slowed
- Battle of Kursk July 5 – August 23, 1943 · Soviet victory
  - Operation Citadel July 1943 · Soviet victory
  - Battle of Prokhorovka July 12, 1943
- Operation Kutuzov July 12 – August 18, 1943 · Soviet victory
- Donbas strategic offensive (July 1943) July 17 – August 2, 1943 · German victory
- Belgorod–Bogodukhov offensive operation August 3–23, 1943 · Soviet victory
- Donbas strategic offensive (August 1943) August 13 – September 22, 1943 · Soviet victory
- Battle of the Dnieper August 24 – December 23, 1943 · Soviet victory
- Battle of Lenino October 12–13, 1943 · Indecisive
- Battle of Kiev (1943) November 3 – December 22, 1943 · Soviet victory
- Battle of Nevel (1943) December 16, 1943 · Soviet victory
- Dnieper–Carpathian offensive December 24, 1943 – April 14, 1944 · Soviet victory
  - Zhitomir–Berdichev offensive December 24, 1943 – January 14, 1944 · Soviet victory
  - Battle of Korsun–Cherkassy January 24 – February 17, 1944 · Soviet victory
  - Nikopol–Krivoi Rog offensive January 30 – February 29, 1944 · Soviet victory
  - Bereznegovatoye–Snigirevka offensive March 6–18, 1944 · Soviet victory
  - Polesskoe offensive March 15 – April 5, 1944 · German victory
  - Odessa Offensive March 26 – April 30, 1944 · Soviet victory
- Battle of Romania 1944 · Allied victory
  - Battle of Turda September 5 – October 8, 1944
  - Battle of Păuliș September 14–19, 1944 · Romanian–Soviet victory
- Leningrad–Novgorod offensive January 14 – March 1, 1944 · Soviet victory
  - Krasnoye Selo–Ropsha offensive January 14–30, 1944 · Soviet victory
  - Kingisepp–Gdov offensive February 1 – March 1, 1944 · Soviet victory
- Battle of Narva (1944) February 2 – August 10, 1944 · German defensive victory
  - Battle for Narva Bridgehead February 2 – July 26, 1944 · German withdrawal
  - Narva offensive (15–28 February 1944) February 15–28, 1944 · German defensive victory
  - Narva offensive (1–4 March 1944) March 1–4, 1944 · German defensive victory
  - Battle of Auvere July 20–25, 1944 · German defensive victory
  - Narva offensive (July 1944) July 24–30, 1944 · Soviet victory
  - Battle of Tannenberg Line July 25 – August 10, 1944 · German victory
- Rovno–Lutsk offensive February 11, 1944 · Soviet victory
- Uman–Botoșani offensive March 5 – April 17, 1944 · Soviet victory
- Crimean offensive April 8 – May 12, 1944 · Soviet victory
- First Jassy–Kishinev offensive April 8 – June 6, 1944 · Axis victory
  - First Battle of Târgu Frumos April 9–12, 1944 · Axis victory
- Operation Bagration June 22 – August 19, 1944 · Soviet victory
  - Vitebsk–Orsha offensive June 23–28, 1944 · Soviet victory
  - Mogilev offensive June 23–28, 1944 · Soviet victory
  - Bobruysk offensive June 28, 1944 · Soviet victory
  - Minsk offensive June 29 – July 4, 1944 · Soviet Victory
  - Polotsk offensive June 29 – July 4, 1944 · Soviet Victory
  - Vilnius offensive July 1944 · Soviet victory
  - Šiauliai offensive July 5, 1944 · Soviet victory
  - Belostok offensive July 5–27, 1944 · Soviet victory
  - Lublin–Brest offensive July 18 – August 2, 1944 · Soviet victory
  - Kaunas offensive July 28 – August 28, 1944 · Soviet victory
- Battle of Radzymin (1944) August 1–10, 1944 · German victory
- Battle of Studzianki August 9–16, 1944 · Allied victory
- Tartu offensive August 10 – September 6, 1944 · Soviet victory
- Second Jassy–Kishinev offensive August 20–29, 1944 · Soviet victory
- Battle of the Dukla Pass September 8 – October 28, 1944 · Inconclusive
- Baltic offensive September 14 – November 24, 1944 · Soviet victory
  - Riga offensive (1944) September 14 – October 24, 1944 · Soviet victory
  - Tallinn offensive September 17–26, 1944 · Soviet victory
- Belgrade offensive September 15 – November 24, 1944 · Allied victory
- Moonsund operation September 29 – November 24, 1944 · Soviet victory
- Battle of Memel October 5, 1944 – January 28, 1945 · Soviet victory
- Battle of Debrecen October 6–29, 1944 · Inconclusive
- Petsamo–Kirkenes offensive October 7–31, 1944 · Soviet victory
- Nemmersdorf massacre October 21, 1944
- Budapest offensive October 29, 1944 – February 13, 1945 · Allied victory
  - Siege of Budapest December 26, 1944 – February 13, 1945 · Soviet victory
  - Operation Konrad III January 18–27, 1945 · Inconclusive
- Vistula–Oder offensive January 12 – February 2, 1945 · Soviet victory
- Siege of Breslau January 23 – May 6, 1945 · Soviet victory
- Heiligenbeil Pocket January 26 – March 29, 1945 · Soviet victory
- Operation Solstice February 15–18, 1945
- East Pomeranian offensive February 24 – April 4, 1945 · Soviet victory
  - Battle of Kolberg (1945) March 4–18, 1945 · Polish-Soviet victory
- Moravia–Ostrava offensive March 10 – May 5, 1945 · Soviet victory
- Bratislava–Brno offensive March 25 – May 5, 1945 · Soviet victory
- Nagykanizsa–Körmend offensive March 26 – April 15, 1945 · Allied victory * Hungary liberated from German occupation * Defeat of all Axis forces in Hungary
- Battle of the Oder–Neisse April 1945 · Soviet victory
- Vienna offensive April 2–13, 1945 · Allied victory
- Battle of the Seelow Heights April 16–19, 1945 · Soviet victory
- Battle of Berlin April 16 – May 2, 1945 · Soviet victory
  - Battle in Berlin April 23 – May 2, 1945 · Soviet victory
- Battle of Bautzen (1945) April 21–30, 1945 · German victory
Battle of Białystok–Minsk June 22 – July 3, 1941 · German victory
- Bombing of Minsk in World War II June 22–27, 1941
Battle of Brody (1941) June 23–30, 1941 · German victory
Second Soviet-Finnish War June 25, 1941 – September 19, 1944 · Soviet victory
- Battle of Hanko (1941) June 22 – December 2, 1941 · Soviet troops evacuated by sea
- Battle of Bengtskär July 26, 1941 · Finnish victory
- Operation EF (1941) July 30, 1941 · German victory
- Battle of Porlampi August 30, 1941 · Finnish victory
- Finnish invasion of the Karelian Isthmus September 5, 1941 · Finnish victory
- Finnish invasion of East Karelia (1941) December 6, 1941 · Finnish victory
- Battle of Suursaari March 26 – April 2, 1942 · Finnish victory
- Battle of Someri July 8–9, 1942 · Finnish victory
- Vyborg–Petrozavodsk offensive June 10 – August 9, 1944 · Moscow Armistice
  - Battle of Tali–Ihantala June 25 – July 9, 1944 · Finnish victory
  - Battle of Vyborg Bay (1944) July 1–10, 1944 · Finnish defensive victory
  - Battle of Vuosalmi July 4–15, 1944 · Finnish victory
- Battle of Tienhaara June 22, 1944 · Finnish victory
- Battle of Tali–Ihantala June 25 – July 9, 1944 · Finnish victory
- Battle of Nietjärvi July 15–17, 1944 · Finnish victory
- Battle of Ilomantsi (1944) July 26 – August 13, 1944 · Finnish victory
Bombing of Kassa June 26, 1941 · Hungary declares war on the Soviet Union
Battle of Uman July 15 – August 8, 1941 · Axis victory
Raid on Grand Harbour July 25–26, 1941 · British victory
Arctic convoys of World War II August 1941 – May 1945 · Allied victory
Finnish invasion of Ladoga Karelia August 1941 · Finnish victory
Battle of Kiev (1941) August 7 – September 26, 1941 · German victory
Siege of Odessa August 8 – October 16, 1941 · Axis victory
Anglo-Soviet invasion of Iran August 25 – September 17, 1941 · Anglo-Soviet victory
Operation Gauntlet August 25 – September 3, 1941
Siege of Leningrad September 8, 1941 – January 27, 1944 · Soviet victory
- Leningrad strategic defensive July 10 – September 30, 1941 · German victory
- Demyansk Pocket January 7 – May 25, 1942 · German victory
- Battle of Lyuban January 7 – April 30, 1942 · German victory
- Battle of Someri July 8–9, 1942 · Finnish victory
- Operation Iskra January 12–30, 1943 · Soviet victory
- Operation Polar Star February 1943 – April 1943 · German victory
  - Battle of Krasny Bor February 10–13, 1943 · Axis victory
- Leningrad–Novgorod offensive January 14 – March 1, 1944 · Soviet victory
  - Krasnoye Selo–Ropsha offensive January 14–30, 1944 · Soviet victory
  - Kingisepp–Gdov offensive February 1 – March 1, 1944 · Soviet victory
Battle of Moscow October 2, 1941 – January 7, 1942 · Soviet victory
- Battle of Bryansk October 2–21, 1941 · German victory
Tikhvin Offensive November 10 – December 30, 1941 · Soviet victory
Battle of Rostov (1941) November 17 – December 2, 1941 · Soviet victory
Sinking of HMAS Sydney November 19, 1941
Attack on Pearl Harbor December 7, 1941 · Japanese victory
Pacific War December 7, 1941 – September 2, 1945 · Allied victory
- Attack on Pearl Harbor December 7, 1941 · Japanese victory
- Philippines campaign (1941–1942) December 7, 1941 – May 10, 1942 · Japanese victory
  - Battle of Bataan January 7 – April 9, 1942 · Japanese victory
- Malayan campaign December 8, 1941 – January 31, 1942 · Japanese victory
  - Battle of Kota Bharu December 8, 1941 · Japanese victory
  - Operation Krohcol December 8–11, 1941 · Axis victory
  - Bombing of Singapore (1941) December 8, 1941 · Inconclusive
  - Battle of Jitra December 11–13, 1941 · Japanese victory
  - Battle of Kampar December 30, 1941 – January 2, 1942 · Allied victory
  - Battle of Slim River January 6–8, 1942 · Japanese victory
  - Battle off Endau January 26–27, 1942 · Japanese victory
- Battle of Hong Kong December 8–25, 1941 · Japanese victory
- South-East Asian theatre of World War II December 8, 1941 – September 9, 1945 · Allied victory
  - Japanese occupation of Cambodia 1941 – 1945
  - Sinking of Prince of Wales and Repulse December 10, 1941 · Japanese victory
  - Burma campaign December 14, 1941 – September 13, 1945 · Allied victory
  - Battle of Rabaul (1942) January 23, 1942 – February 1942 · Japanese victory
  - Japanese coup d'état in French Indochina March 9 – May 15, 1945
- Battle of Guam (1941) December 8–10, 1941 · Japanese victory
- Battle of Wake Island December 8–23, 1941 · Japanese victory
- Japanese declaration of war on the United States and the British Empire December 8, 1941
- United States declaration of war on Japan December 8, 1941
- British declaration of war on Japan December 8, 1941
- Dutch East Indies campaign December 8, 1941 – March 9, 1942 · Japanese victory
  - Battle of the Java Sea February 27, 1942 · Japanese victory
  - Battle of Java (1942) February 28 – March 12, 1942 · Japanese victory
- Burma campaign December 14, 1941 – September 13, 1945 · Allied victory
  - Japanese invasion of Burma December 14, 1941 – May 1942 · Japanese victory
  - Burma campaign (1942–1943) June 1942 – September 1943 · Axis victory
  - Arakan campaign (1942–1943) December 1942 – May 1943 · Japanese victory
  - Battle of Northern Burma and Western Yunnan October 1943 – March 1945 · Allied victory
  - Battle of the Admin Box February 5–23, 1944 · Allied victory
  - Operation U-Go March 1944 – June 1944 · British victory
  - Battle of Imphal March 8 – July 3, 1944 · British victory
  - Battle of Kohima April 4 – June 22, 1944 · Allied victory
  - Siege of Myitkyina May 17 – August 3, 1944 · Allied victory
  - Burma campaign (1944–1945) November 1944 – August 7, 1945 · Allied victory
  - Burma campaign (1944) November 1944 · Allied victory
  - Battle of Meiktila and Mandalay January 1 – March 29, 1945 · Allied victory
  - Battle of Ramree Island January 14 – February 22, 1945 · British victory
  - Battle of Hill 170 January 22–31, 1945 · British victory
  - Battle of the Sittang Bend July 2 – August 7, 1945 · British victory
- Battle of Borneo (1941–1942) December 16, 1941 – April 1, 1942 · Japanese victory
- Battle of Corregidor December 29, 1941 – May 6, 1942 · Japanese victory
- Solomon Islands campaign January 1942 – August 21, 1945 · Allied victory
  - Battle of Tulagi and Gavutu–Tanambogo August 7–9, 1942 · Allied victory
  - Operation Vengeance April 18, 1943
- Battle of Bataan January 7 – April 9, 1942 · Japanese victory
- Battle of Manado January 11–12, 1942 · Japanese victory
- Battle of Balikpapan (1942) January 23–24, 1942 · Japanese victory
- New Guinea campaign January 23, 1942 – August 1945 · Allied victory
  - Battle of the Coral Sea May 4–8, 1942
  - Kokoda Track campaign July 21 – November 16, 1942 · Allied victory
  - Battle of Milne Bay August 25 – September 7, 1942 · Allied victory
  - Battle of Buna–Gona November 16, 1942 – January 22, 1943 · Allied victory
  - Battle of Wau January 29–31, 1943 · Allied victory
  - Battle of Hollandia April 22 – June 6, 1944 · Allied victory
  - Western New Guinea campaign April 22, 1944 – August 15, 1945 · Allied victory
  - Battle of Driniumor River July 10 – August 25, 1944 · Allied victory
- Marshalls–Gilberts raids February 1, 1942 · Minor damage to Japanese garrisons
- Battle of Singapore February 8–15, 1942 · Japanese victory
  - Battle of Kranji February 9–10, 1942 · Japanese victory
  - Battle of Bukit Timah February 10–12, 1942 · Japanese victory
  - Battle of Pasir Panjang February 13–14, 1942 · Japanese victory
- Battle of Palembang February 13–15, 1942 · Japanese victory
- Invasion of Sumatra February 14 – March 28, 1942 · Japanese victory
- Battle of Badung Strait February 18–20, 1942 · Japanese victory
- Operation K March 4, 1942 · Inconclusive
- Invasion of Salamaua–Lae March 13, 1942 · Japanese victory
- Indian Ocean raid March 31 – April 10, 1942 · Japanese victory
- Battle of Christmas Island March 31 – April 1, 1942 · Japanese victory
- Japan campaign April 18, 1942 – September 2, 1945 · Allied victory
  - Air raids on Japan August 15, 1939 – August 15, 1945 · Allied victory
  - Volcano and Ryukyu Islands campaign February 19 – June 21, 1945 · Allied victory
- Invasion of Tulagi (May 1942) May 3–4, 1942 · Japanese victory
- Battle of the Coral Sea May 4–8, 1942
- Aleutian Islands campaign June 3, 1942 – August 15, 1943 · Allied victory
  - Japanese occupation of Kiska June 6, 1942 – July 28, 1943 · Japanese victory
  - Battle of the Pips May 27 – July 29, 1943
- Battle of Midway June 4–7, 1942 · American victory
- Kokoda Track campaign July 21 – November 16, 1942 · Allied victory
- Guadalcanal campaign August 7, 1942 – February 9, 1943 · Allied victory
  - Battle of Tulagi and Gavutu–Tanambogo August 7–9, 1942 · Allied victory
  - Battle of the Tenaru August 21, 1942 · Allied victory
  - Battle of the Eastern Solomons August 24–25, 1942 · American victory
  - Battle of Edson's Ridge September 12–14, 1942 · Allied victory
  - Actions along the Matanikau September 23 – October 9, 1942 · September action: Japanese victory; October action: American victory
  - Battle of the Santa Cruz Islands October 25–27, 1942
  - Battle of Tassafaronga November 30, 1942 · Japanese victory
  - Carlson's patrol December 4, 1942 · Allied victory
  - Operation Ke January 14 – February 7, 1943 · Japanese victory
  - Battle of Rennell Island January 29–30, 1943 · Japanese victory
- Raid on Makin Island August 17–18, 1942 · American victory
- Battle for Henderson Field October 23–26, 1942 · American victory
- Battle of the Santa Cruz Islands October 25–27, 1942
- Matanikau Offensive November 1–4, 1942 · United States victory
- Koli Point action November 3–12, 1942 · Allied victory
- Naval Battle of Guadalcanal November 13–15, 1942 · American victory
- Battle of Mount Austen, the Galloping Horse, and the Sea Horse December 15, 1942 – January 23, 1943 · Allied victory
- Battle of the Bismarck Sea March 2–4, 1943 · Allied victory
- Battle of Blackett Strait March 6, 1943 · American victory
- Battle of the Komandorski Islands March 27, 1943 · American victory
- Salamaua–Lae campaign April 22 – September 16, 1943 · Allied victory
- Battle of Attu May 11–30, 1943 · Allied victory
- Convoy GP55 June 15–20, 1943 · Japanese victory
- Operation Cartwheel June 30, 1943 – March 20, 1944 · Allied victory
  - Operation Chronicle June 23–30, 1943 · Allied occupation
  - Landing on Emirau March 20–27, 1944 · Unopposed
- Battle of Kula Gulf July 6, 1943 · Inconclusive
- Battle of Kolombangara July 12–13, 1943
- Battle off Horaniu August 17–18, 1943
- Landing at Nadzab September 5, 1943 · Allied victory
- Huon Peninsula campaign September 22, 1943 – March 1, 1944 · Allied victory
- Battle of Vella Lavella (naval) October 6, 1943 · Japanese victory
- Bougainville campaign November 1, 1943 – August 21, 1945 · Allied victory
  - Bougainville counterattack March 8–25, 1944 · Allied victory
- Gilbert and Marshall Islands campaign November 1943 – February 23, 1944 · Allied victory
  - Battle of Kwajalein January 31 – February 3, 1944 · American victory
  - Battle of Eniwetok February 17–23, 1944 · American victory
- Bombing of Rabaul (November 1943) November 2–11, 1943 · Allied victory
- Landings at Cape Torokina November 3, 1943 · Allied victory
- Raid on Choiseul November 3, 1943 · Indecisive
- Battle of the Treasury Islands November 12, 1943 · Allied victory
- Battle of Tarawa November 20–23, 1943 · Allied victory
- New Britain campaign December 15, 1943 – August 21, 1945 · Allied victory
- Battle of Arawe December 15, 1943 – February 24, 1944 · Allied victory
- Operation Matterhorn 1944
- Battle of the Green Islands January 29 – February 27, 1944 · Allied victory
- Operation Hailstone February 17–18, 1944 · American victory
- Indian Ocean raid (1944) March 1–16, 1944 · Inconclusive
- Operation Cockpit April 19, 1944 · Inconclusive
- Battle of Biak May 27 – August 17, 1944 · Allied victory
- Mariana and Palau Islands campaign June 1944 – November 1944 · American victory
- Battle of Saipan June 15 – July 9, 1944 · American victory
- Battle of the Philippine Sea June 19–20, 1944 · American victory
- Battle of Tinian July 24 – August 1, 1944 · American victory
- Operation Boomerang August 11, 1944
- Battle of Peleliu September 15 – November 27, 1944 · American victory
- Battle of Angaur September 15 – October 22, 1944 · American victory
- Battle of Morotai September 15 – October 4, 1944 · Allied victory
- Battle of Leyte October 17 – December 31, 1944 · Allied victory
- Philippines campaign (1944–1945) October 20, 1944 – August 15, 1945 · Allied victory
  - Battle of Leyte October 17 – December 31, 1944 · Allied victory
  - Battle of Mindoro December 13–16, 1944 · Allied victory
  - Battle of Luzon January 9 – August 15, 1945 · Allied victory
  - Battle of Baguio February 21 – April 26, 1945 · Allied victory
  - Invasion of Palawan February 28 – April 22, 1945 · Allied victory
  - Battle of Mindanao March 10 – August 15, 1945 · Allied victory
  - Battle of Visayas March 18 – July 30, 1945 · Allied victory
- Battle of Leyte Gulf October 23–26, 1944 · Allied victory
  - Battle off Samar October 25, 1944 · American victory
- Battle of Ormoc Bay November 11 – December 21, 1944 · American victory
- Battle of Luzon January 9 – August 15, 1945 · Allied victory
  - Invasion of Lingayen Gulf January 6–9, 1945 · Allied victory
- South China Sea raid January 20, 1945
- Battle of Manila (1945) February 3 – March 3, 1945 · Allied victory
- Bombing of Kobe in World War II February 4, 1945
- Operation Kita February 10–20, 1945 · Japanese victory
- Battle of Iwo Jima February 19 – March 26, 1945 · American victory
- Battle of Okinawa April 1 – June 22, 1945 · Allied victory
  - Operation Ten-Go April 7, 1945 · American victory
- Operation Starvation April 1945
- Operation Ten-Go April 7, 1945 · American victory
  - Operation Kikusui April 6 – June 22, 1945 · Allied victory
- Battle of Tarakan (1945) May 1 – June 21, 1945 · Allied victory
- Borneo campaign May 1 – August 15, 1945 · Allied victory
  - Battle of North Borneo June 10 – August 15, 1945 · Allied victory
- Battle of the Malacca Strait May 15–16, 1945 · British victory
- Battle of North Borneo June 10 – August 15, 1945 · Allied victory
  - Battle of Labuan June 10–21, 1945 · Allied victory
- Operation Inmate June 15, 1945 · Allied victory
- Battle of Balikpapan (1945) July 1, 1945 · Allied victory
- Soviet invasion of Manchuria August 9–20, 1945 · Soviet victory
  - Battle of Mutanchiang August 16, 1945
German declaration of war on the United States December 11, 1941
United States declaration of war on Germany (1941) December 11, 1941
Burma campaign December 14, 1941 – September 13, 1945 · Allied victory
- Japanese invasion of Burma December 14, 1941 – May 1942 · Japanese victory
  - Battle of Bilin River February 18, 1942 · Japanese victory
  - Battle of Sittang Bridge February 23, 1942 · Japanese victory
  - Battle of Pegu March 7, 1942 · Japanese victory
- Burma campaign (1942–1943) June 1942 – September 1943 · Axis victory
- Arakan campaign (1942–1943) December 1942 – May 1943 · Japanese victory
- Battle of Northern Burma and Western Yunnan October 1943 – March 1945 · Allied victory
  - Battle of Mount Song June 4 – September 7, 1944 · Allied victory
- Battle of the Admin Box February 5–23, 1944 · Allied victory
- Operation U-Go March 1944 – June 1944 · British victory
  - Battle of Imphal March 8 – July 3, 1944 · British victory
  - Battle of Kohima April 4 – June 22, 1944 · Allied victory
- Battle of Imphal March 8 – July 3, 1944 · British victory
  - Battle of Shangshak March 20–26, 1944
- Battle of Kohima April 4 – June 22, 1944 · Allied victory
  - Battle of the Tennis Court April 8 – May 13, 1944 · Allied victory
- Siege of Myitkyina May 17 – August 3, 1944 · Allied victory
- Burma campaign (1944–1945) November 1944 – August 7, 1945 · Allied victory
- Burma campaign (1944) November 1944 · Allied victory
- Battle of Meiktila and Mandalay January 1 – March 29, 1945 · Allied victory
  - Battle of Pokoku and Irrawaddy River operations February 4 – May 13, 1945 · Allied victory
- Battle of Ramree Island January 14 – February 22, 1945 · British victory
- Battle of Hill 170 January 22–31, 1945 · British victory
- Battle of the Sittang Bend July 2 – August 7, 1945 · British victory
Operation Archery December 27, 1941 · Allied victory

1942 60 events

Solomon Islands campaign January 1942 – August 21, 1945 · Allied victory
- Battle of Tulagi and Gavutu–Tanambogo August 7–9, 1942 · Allied victory
- Operation Vengeance April 18, 1943
Operation Bernhard 1942 – 1945
Operation Hardboiled 1942
Torpedo Alley 1942 – 1945 · German victory
Battles of Rzhev January 5, 1942 – March 21, 1943 · Inconclusive
- Rzhev–Vyazma Offensive January 8 – April 20, 1942 · Inconclusive
- Toropets–Kholm offensive February 6, 1942 · Soviet victory
- Vyazma airborne operation February 28, 1942 · German victory
- Operation "Seydlitz" July 2–23, 1942 · German victory
- Battle of Rzhev, summer 1942 July 30 – October 1, 1942 · German victory
- Battle of Velikiye Luki November 19, 1942 – January 16, 1943 · Soviet victory
- Operation Mars November 25 – December 16, 1942 · German victory
Battle of Dražgoše January 9–11, 1942 · Partisans retreated on the third day, Germans razed Dražgoše and imprisoned or killed its inhabitants in revenge
Battle of Tarakan (1942) January 11–12, 1942 · Japanese victory
Operation Postmaster January 14, 1942 · British victory
Battle of Muar January 14–22, 1942 · Japanese victory
- Battle of Gemas January 14, 1942 · Australian victory
Battle of Ambon January 30 – February 3, 1942 · Japanese victory
Operation Ozren February 2, 1942 · Partisan withdrawal
Battle of Makassar Strait February 4, 1942 · Japanese victory
Battle of Singapore February 8–15, 1942 · Japanese victory
- Battle of Kranji February 9–10, 1942 · Japanese victory
- Battle of Bukit Timah February 10–12, 1942 · Japanese victory
- Battle of Pasir Panjang February 13–14, 1942 · Japanese victory
Operation Donnerkeil February 11–12, 1942 · German victory
Attack on Aruba February 16, 1942 · Axis victory
Battle of Timor February 19, 1942 – February 10, 1943 · Japanese victory
Battle of Los Angeles February 25, 1942
Operation Biting February 27–28, 1942 · British victory
Battle of Sunda Strait February 28 – March 1, 1942 · Japanese victory
Second Battle of the Java Sea March 1, 1942 · Japanese victory
Operation Sportpalast March 1942 · Inconclusive
Dünamünde Action March 1942
Attack on Broome March 3, 1942 · Japanese victory
Operation Bamberg March 26 – April 6, 1942
Bombing of Lübeck in World War II March 29, 1942
Operation Hannover April 1942 – June 1942 · German victory
Air raid on Ceylon (5 April 1942) April 5–9, 1942 · Japanese victory
Battle of the St. Lawrence May 1942 – November 1944 · Allied strategic victory
Battle of Madagascar May 5 – November 6, 1942 · Allied victory
Cocos Islands mutiny May 8, 1942 · British victory
Battle of Gazala May 26 – June 21, 1942 · Axis victory
- Battle of Bir Hakeim May 26 – June 11, 1942
Battle of Bir Hakeim May 26 – June 11, 1942
Operation Anthropoid May 27, 1942
Attack on Sydney Harbour May 31 – June 8, 1942 · Indecisive
Battle of Midway June 4–7, 1942 · American victory
Battle of Dutch Harbor June 4, 1942 · Japanese victory
Lidice massacre June 10, 1942
Battle of Voronezh (1942) June 28 – July 24, 1942 · Axis victory
Battle of Stalingrad July 17, 1942 – February 2, 1943 · Soviet victory
- Operation Uranus November 19–23, 1942 · Soviet victory
- Operation Little Saturn December 12, 1942 – February 18, 1943 · Soviet victory
- Operation Winter Storm December 12–23, 1942 · Soviet victory
- Raid on Tatsinskaya December 18–28, 1942 · Soviet victory
- Operation Koltso January 10 – February 2, 1943 · Soviet victory
Battle of Rostov (1942) July 19, 1942 · German victory
Kokoda Track campaign July 21 – November 16, 1942 · Allied victory
Operation Fischreiher July 22, 1942 · Axis operation failure
Guadalcanal campaign August 7, 1942 – February 9, 1943 · Allied victory
- Battle of Tulagi and Gavutu–Tanambogo August 7–9, 1942 · Allied victory
- Battle of the Tenaru August 21, 1942 · Allied victory
- Battle of the Eastern Solomons August 24–25, 1942 · American victory
- Battle of Edson's Ridge September 12–14, 1942 · Allied victory
- Actions along the Matanikau September 23 – October 9, 1942 · September action: Japanese victory; October action: American victory
- Battle of the Santa Cruz Islands October 25–27, 1942
- Battle of Tassafaronga November 30, 1942 · Japanese victory
- Carlson's patrol December 4, 1942 · Allied victory
- Operation Ke January 14 – February 7, 1943 · Japanese victory
- Battle of Rennell Island January 29–30, 1943 · Japanese victory
Battle of Savo Island August 8–9, 1942 · Japanese victory
Manhattan Project August 13, 1942 – January 1, 1947
- Trinity nuclear test July 16, 1945
Dieppe Raid August 19, 1942 · German victory
Sinyavino offensive (1942) August 19 – October 10, 1942 · Soviet offensive defeated, German offensive cancelled.
Battle of the Eastern Solomons August 24–25, 1942 · American victory
Battle of Alam el Halfa August 30 – September 5, 1942 · British victory
Operation Musketoon September 11–21, 1942 · Allied victory
Operation Alfa October 5–12, 1942 · Partisan retreat and massacre of inhabitants by Chetnik forces
Battle of Cape Esperance October 11–12, 1942 · American victory
Battle of Goodenough Island October 22–27, 1942 · Allied victory
Second Battle of El Alamein October 23 – November 11, 1942 · Allied victory
- Defence of Outpost Snipe October 26–27, 1942 · British victory
Operation Torch November 8–16, 1942 · Allied victory
- Naval Battle of Casablanca November 8–16, 1942 · American victory
- Battle of Port Lyautey November 8, 1942 · American victory
- Operation Reservist November 8, 1942 · Vichy French victory
- Operation Terminal November 8, 1942
Tunisian campaign November 17, 1942 – May 13, 1943 · Allied victory
- Run for Tunis November 10 – December 25, 1942 · Axis victory
- Battle of Sidi Bou Zid February 14–17, 1943 · German victory
- Battle of Kasserine Pass February 19–25, 1943
- Operation Ochsenkopf February 26 – March 4, 1943 · Allied victory
- Battle of Medenine March 6, 1943 · Allied victory
- Battle of the Mareth Line March 16–31, 1943 · British victory
- Battle of El Guettar March 23, 1943 · Indecisive
- Battle of Wadi Akarit April 6–7, 1943 · Allied victory
- Battle of Longstop Hill April 22–23, 1943 · British victory
- Battle of Hill 609 April 27 – May 1, 1943 · American victory
- Operation Flax April 27, 1943 · Allied victory
- Operation Retribution May 8–13, 1943 · Allied victory
Battle of Velikiye Luki November 19, 1942 – January 16, 1943 · Soviet victory
Battle of Tassafaronga November 30, 1942 · Japanese victory
Battle of El Agheila December 11–18, 1942 · (see Analysis section)
Battle of the Barents Sea December 31, 1942 · British victory

1943 48 events

Operation Concert 1943 · Soviet victory
Battle of Nikolayevka January 13–26, 1943 · Axis victory
Operation Weiss February 1943 – April 1943 · Partisan retreat with heavy losses, Chetnik defeat, Axis failure to achieve strategic goals
Operation Hornung February 8–26, 1943 · German victory
Battle of Krasny Bor February 10–13, 1943 · Axis victory
Third Battle of Kharkov February 19 – March 15, 1943 · German victory
Battle of the Bismarck Sea March 2–4, 1943 · Allied victory
Operation I-Go April 1–19, 1943 · Inconclusive
Battle of Attu May 11–30, 1943 · Allied victory
Operation Chastise May 16–17, 1943 · British victory
Operation Cottbus May 20 – June 24, 1943 · Estimated at least 20,000 victims at the cost of 59 German troops KIA <!---
New Georgia campaign June 20 – October 7, 1943 · Allied victory
Battle of Kursk July 5 – August 23, 1943 · Soviet victory
- Operation Citadel July 1943 · Soviet victory
- Battle of Prokhorovka July 12, 1943
Italian campaign July 9, 1943 – May 2, 1945 · Allied victory
- Allied invasion of Sicily July 9 – August 17, 1943 · Allied victory
  - Operation Ladbroke July 9–10, 1943 · British victory
  - Operation Fustian July 13–16, 1943 · British victory
- Battle of Troina July 31 – August 6, 1943 · Allied victory
- Allied invasion of Italy September 3–16, 1943 · Allied victory
  - Operation Baytown September 3, 1943 · Allied victory
  - Operation Slapstick September 9, 1943 · British success
  - Operation Avalanche September 9, 1943 · Allied victory
- Armistice of Cassibile September 3, 1943
- Operation Achse September 8–19, 1943 · Axis victory
- Gran Sasso raid September 12, 1943
- Four Days of Naples September 30, 1943 · Resistance victory
- Air raid on Bari December 2, 1943 · German victory
- Battle of Monte la Difensa December 3–9, 1943 · Allied victory
- Moro River campaign December 4–26, 1943
  - Battle of Ortona December 20–28, 1943 · Canadian victory
- Battle of San Pietro Infine December 8–17, 1943 · Allied victory
- Battle of Monte Cassino January 17 – May 18, 1944 · Allied victory
  - Battle of Rapido River January 22, 1944 · German victory
  - Operation Diadem May 11–23, 1944 · Allied victory
- Battle of Anzio January 22 – June 4, 1944 · Allied victory
  - Battle of Cisterna January 30 – February 2, 1944 · German victory
- Battle of Ancona June 16 – July 18, 1944 · Allied victory
- Invasion of Elba June 17–19, 1944 · Allied victory
- Operation Olive August 25 – December 31, 1944 · Inconclusive
  - Battle of Gemmano September 4–15, 1944 · Allied victory
  - Battle of Rimini (1944) September 13–21, 1944 · Allied victory
  - Battle of San Marino September 17–20, 1944 · Allied victory
- Bombing of Gorla October 20, 1944
- Battle of Monte Castello November 25, 1944 – February 21, 1945 · Allied victory
- Battle of Garfagnana December 26–28, 1944 · Axis victory
- Spring 1945 offensive in Italy April 6 – May 2, 1945 · Allied victory
  - Operation Tombola March 27 – April 23, 1945 · Allied victory
  - Battle of Bologna April 9–21, 1945 · Allied victory
  - Battle of the Argenta Gap April 12–19, 1945 · Allied victory
  - Operation Herring April 19–23, 1945 · Allied victory
  - Battle of Collecchio April 26–29, 1945 · Allied victory
  - Race for Trieste April 30 – May 2, 1945 · Allied victory
Allied invasion of Sicily July 9 – August 17, 1943 · Allied victory
- Operation Ladbroke July 9–10, 1943 · British victory
- Operation Fustian July 13–16, 1943 · British victory
Battle of Gela (1943) July 10–12, 1943 · Allied victory
Battle of Prokhorovka July 12, 1943
Operation Chestnut July 12, 1943 · British failure
Operation Hermann July 13 – August 8, 1943 · Inconclusive
Belgorod–Kharkov offensive operation August 1943 – August 23, 1943 · Soviet victory
Operation Tidal Wave August 1, 1943 · Axis victory
Battle of Centuripe August 2–4, 1943 · British victory
Battle of Vella Gulf August 6–7, 1943 · American victory
Smolensk operation August 7 – October 2, 1943 · Soviet victory
Operation Cottage August 15, 1943 · Allied victory
Battle of Vella Lavella (land) August 15 – October 9, 1943 · Allied victory
Schweinfurt–Regensburg mission August 17, 1943 · German victory
Bombing of Wewak August 21, 1943 · Allied victory
Foibe massacres September 1943
Allied invasion of Italy September 3–16, 1943 · Allied victory
- Operation Baytown September 3, 1943 · Allied victory
- Operation Slapstick September 9, 1943 · British success
- Operation Avalanche September 9, 1943 · Allied victory
Armistice of Cassibile September 3, 1943
Operation Zitronella September 8, 1943 · German victory
Markham, Ramu and Finisterre campaigns September 19, 1943 – April 24, 1944 · Allied victory
- Battle of Kaiapit September 19–20, 1943 · Allied victory
Massacre of the Acqui Division September 21–26, 1943
Operation Source September 22, 1943 · Allied partial success
Battle of Finschhafen September 22 – October 24, 1943 · Allied victory
Bombing of Bulgaria in World War II October 18, 1943 – April 17, 1944
Kerch–Eltigen operation October 31 – December 11, 1943
Bougainville campaign November 1, 1943 – August 21, 1945 · Allied victory
- Bougainville counterattack March 8–25, 1944 · Allied victory
Battle of Empress Augusta Bay November 1–2, 1943 · American victory
Bombing of the Vatican November 5, 1943 · Allied victory
Battle of Tarawa November 20–23, 1943 · Allied victory
Battle of Cape St. George November 25, 1943 · American victory
Tehran Conference November 28 – December 1, 1943
Battle of Sio December 5, 1943 – March 1, 1944 · Allied victory
Operation Dexterity December 15, 1943 – April 22, 1944 · Allied victory
Battle of the North Cape December 26, 1943 · Allied victory
Battle of Cape Gloucester December 26, 1943 – April 22, 1944 · Allied victory

1944 80 events

Bombing of Bucharest in World War II 1944
Operation Tempest January 4, 1944
- Operation Ostra Brama July 7–15, 1944 · Operation failed
- Lwów Uprising July 23–27, 1944 · Polish victory
- Warsaw Uprising August 1 – October 2, 1944 · German victory
Battle of Monte Cassino January 17 – May 18, 1944 · Allied victory
- Battle of Rapido River January 22, 1944 · German victory
- Operation Diadem May 11–23, 1944 · Allied victory
Battle of Anzio January 22 – June 4, 1944 · Allied victory
- Battle of Cisterna January 30 – February 2, 1944 · German victory
Battle of Korsun–Cherkassy January 24 – February 17, 1944 · Soviet victory
Operation Hailstone February 17–18, 1944 · American victory
Battle of Eniwetok February 17–23, 1944 · American victory
Operation Jericho February 18, 1944 · Resistance and other prisoners escaped
Big Week February 20–25, 1944
Battle of Talasea March 9, 1944 · Allied victory
Operation Desecrate One March 30–31, 1944 · American victory
Operation Tungsten April 3, 1944 · British victory
Battle of Kohima April 4 – June 22, 1944 · Allied victory
- Battle of the Tennis Court April 8 – May 13, 1944 · Allied victory
Exercise Tiger April 28, 1944
Battle of Wakde May 21, 1944 · American victory
Operation Rösselsprung (1944) May 25 – June 6, 1944 · German failure
Operation Overlord June 6 – August 30, 1944 · Allied victory
- Normandy landings June 6 – August 29, 1944 · Allied victory
  - Operation Tonga June 5–7, 1944 · Allied victory
  - Capture of the Caen Canal and Orne River bridges June 6, 1944 · British victory
  - American airborne landings in Normandy June 6 – July 13, 1944 · Allied victory
  - Battle of Port-en-Bessin June 6–7, 1944 · Allied victory
  - Operation Mallard June 6, 1944 · British victory
- Battle for Caen June 6 – August 6, 1944 · Allied victory
  - Operation Perch June 7–14, 1944 · German victory
  - Operation Martlet June 25 – July 1, 1944 · Allied victory
  - Operation Epsom June 26–30, 1944
  - Operation Windsor July 4–5, 1944 · Canadian victory
  - Operation Charnwood July 8–9, 1944 · Allied victory
  - Operation Jupiter (1944) July 10–11, 1944 · British victory
  - Operation Goodwood July 18–20, 1944
  - Operation Atlantic July 18–21, 1944
- Battle of Cherbourg June 6–30, 1944 · Allied victory
- Invasion of Normandy June 6, 1944 – July 1944 · Allied victory
  - Normandy landings June 6 – August 29, 1944 · Allied victory
  - Battle of Ushant (1944) June 9, 1944 · Allied victory
- Mission Boston June 6, 1944
- Battle of Carentan June 10–14, 1944 · American victory
- Raid on La Caine June 10, 1944 · Allied victory
- Battle of Bréville June 13, 1944 · British Victory
- Operation Spring July 25–27, 1944 · German victory
- Operation Bluecoat July 30 – August 7, 1944 · Allied victory
- Battle for Brest August 7 – September 19, 1944 · Allied victory
- Operation Totalize August 8–13, 1944 · Allied victory
- Falaise pocket August 12–21, 1944 · Allied victory
- Operation Tractable August 14–21, 1944 · Allied victory
- Liberation of Paris August 19–25, 1944 · Free French and allied victory
Battle of Cherbourg June 6–30, 1944 · Allied victory
Battle of Le Mesnil-Patry June 11, 1944 · German victory
Battle of Villers-Bocage June 13, 1944
Battle of Saipan June 15 – July 9, 1944 · American victory
Battle of the Philippine Sea June 19–20, 1944 · American victory
Operation Bagration June 22 – August 19, 1944 · Soviet victory
- Vitebsk–Orsha offensive June 23–28, 1944 · Soviet victory
- Mogilev offensive June 23–28, 1944 · Soviet victory
- Bobruysk offensive June 28, 1944 · Soviet victory
- Minsk offensive June 29 – July 4, 1944 · Soviet Victory
- Polotsk offensive June 29 – July 4, 1944 · Soviet Victory
- Vilnius offensive July 1944 · Soviet victory
- Šiauliai offensive July 5, 1944 · Soviet victory
- Belostok offensive July 5–27, 1944 · Soviet victory
- Lublin–Brest offensive July 18 – August 2, 1944 · Soviet victory
- Kaunas offensive July 28 – August 28, 1944 · Soviet victory
Battle of Noemfoor July 2 – August 31, 1944 · Allied victory
Lvov–Sandomierz offensive July 13 – August 29, 1944 · Soviet victory
Battle of Verrières Ridge July 19–25, 1944 · German defensive victory
20 July plot July 20, 1944
Battle of Tinian July 24 – August 1, 1944 · American victory
Battle of Saint-Lô July 24, 1944 · Allied victory
Operation Cobra July 25–31, 1944 · Allied victory
Battle of Sansapor July 30 – August 31, 1944 · Allied victory
Warsaw Uprising August 1 – October 2, 1944 · German victory
Operation Lüttich August 7–13, 1944 · Allied victory
Battle of Guam (1944) August 10, 1944 · American victory
Operation Dragoon August 15 – September 14, 1944 · Allied victory
Battle of Chambois August 18–20, 1944 · Allied victory
Second Jassy–Kishinev offensive August 20–29, 1944 · Soviet victory
Battle of Marseille August 21–28, 1944 · Allied victory
Allied advance from Paris to the Rhine August 25, 1944 – March 7, 1945 · Allied victory
- Clearing the Channel Coast September 1944 – November 1944 · Allied victory
- Operation Market Garden September 17–25, 1944
  - Battle of Arnhem September 17–26, 1944 · German victory
  - Battle of Nijmegen September 17–20, 1944 · Allied victory
- Battle of the Bulge December 16, 1944 – January 25, 1945 · Allied victory
  - Operation Stösser December 17–21, 1944 · German operational failure
  - Siege of Bastogne December 20–27, 1944 · American victory
  - Battle of St. Vith December 21, 1944 · German victory
Slovak National Uprising August 29 – October 28, 1944
Operation Goodwood (naval) August 29, 1944 · German victory
Lorraine campaign September 1, 1944 – March 19, 1945 · Allied victory
- Battle of Metz September 27 – December 13, 1944 · American victory
Allied siege of La Rochelle September 1944 – May 1945 · German surrender
Liberation of Belgium September 2, 1944 – February 4, 1945 · Allied victory
Battle of Nancy (1944) September 5–15, 1944 · American victory
Air battle over the Ore Mountains September 11, 1944
Battle of Hürtgen Forest September 14, 1944 – February 10, 1945 · German victory
Lapland War September 15, 1944 – April 25, 1945 · Finnish victory
- Operation Tanne Ost September 15, 1944 · Finnish victory
- Battle of Tornio October 1–8, 1944 · Finnish victory
- Battle of Rovaniemi October 12–13, 1944 · German withdrawal
Battle of Angaur September 15 – October 22, 1944 · American victory
Siege of Dunkirk (1944–1945) September 15, 1944 – May 8, 1945
Operation Paravane September 15, 1944 · British victory
Operation Market Garden September 17–25, 1944
- Battle of Arnhem September 17–26, 1944 · German victory
  - Operation Berlin (Arnhem) September 25–26, 1944
- Battle of Nijmegen September 17–20, 1944 · Allied victory
Bombing of Belgrade (1944) September 18, 1944
Battle of Arracourt September 18–29, 1944 · American victory
Battle of Porkuni September 21, 1944 · Soviet victory
Battle of Metz September 27 – December 13, 1944 · American victory
Battle of Overloon September 30 – October 18, 1944 · Allied victory
Battle of Aachen October 2–21, 1944 · American victory
Battle of the Scheldt October 2 – November 8, 1944 · Allied victory
- Battle of Walcheren Causeway October 31 – November 2, 1944 · Indecisive
- Operation Infatuate November 1–8, 1944 · Allied victory
Battle of Debrecen October 6–29, 1944 · Inconclusive
Petsamo–Kirkenes offensive October 7–31, 1944 · Soviet victory
Battle of Tehumardi October 8, 1944
Courland Pocket October 9, 1944 – May 10, 1945 · Free German/Soviet victory
Operation Panzerfaust October 15–16, 1944
Battle of Vukov Klanac October 15–23, 1944 · Partisan victory
Battle of Carei October 21, 1944 · Romanian victory De facto abrogation of the Second Vienna Award
Battle of Leyte Gulf October 23–26, 1944 · Allied victory
- Battle off Samar October 25, 1944 · American victory
Rescue of the Lost Battalion October 26–30, 1944 · American victory
Colmar Pocket November 1944 – February 1945 · Allied victory
Aitape–Wewak campaign November 1944 – August 1945 · Allied victory
Operation Clipper November 10–22, 1944 · Allied victory
Operation Queen November 16 – December 16, 1944 · German defensive victory
Liberation of Strasbourg November 23, 1944 · Allied victory
Battle of Wide Bay–Open Bay December 1944 – April 1945 · Allied victory
Dekemvriana December 3, 1944 – January 11, 1945 · Kingdom of Greece victory
Battle of the Bulge December 16, 1944 – January 25, 1945 · Allied victory
- Operation Stösser December 17–21, 1944 · German operational failure
- Siege of Bastogne December 20–27, 1944 · American victory
- Battle of St. Vith December 21, 1944 · German victory
Operation Greif December 16, 1944
Siege of Budapest December 26, 1944 – February 13, 1945 · Soviet victory
Battle of Elsenborn Ridge December 26, 1944 · American victory
Operation Northwind (1944) December 31, 1944 – January 25, 1945 · Allied victory

1945 49 events

Operation Hannibal January 1945
Operation Bodenplatte January 1, 1945
Vistula–Oder offensive January 12 – February 2, 1945 · Soviet victory
East Prussian offensive January 13 – April 25, 1945 · Soviet victory
Battle of Poznań (1945) January 24 – February 23, 1945 · Allied victory
Raid at Cabanatuan January 30, 1945 · Allied victory
Battle of Bataan (1945) January 31 – February 21, 1945 · Allied victory
Battle of Manila (1945) February 3 – March 3, 1945 · Allied victory
Yalta Conference February 4–11, 1945
Lower Silesian offensive February 8–24, 1945 · Soviet victory
Operation Veritable February 8 – March 11, 1945 · Allied victory
Black Friday (1945) February 9, 1945 · German victory
Bombing of Dresden February 13–15, 1945
Battle of Corregidor (1945) February 16–26, 1945 · American victory
Battle of Iwo Jima February 19 – March 26, 1945 · American victory
Raid on Los Baños February 23, 1945 · Allied victory
East Pomeranian offensive February 24 – April 4, 1945 · Soviet victory
- Battle of Kolberg (1945) March 4–18, 1945 · Polish-Soviet victory
Battle of Schoenfeld March 1, 1945 · Polish victory
Bombing of the Bezuidenhout March 3, 1945
Operation Spring Awakening March 6–16, 1945 · Allied victory
Upper Silesian offensive March 15–31, 1945 · Soviet victory
Operation Carthage March 21, 1945 · British victory
Western Allied invasion of Germany March 22 – May 8, 1945 · Allied victory
- Operation Plunder March 1945 – March 24, 1945 · Allied victory
  - Operation Varsity March 24, 1945 · Allied victory
- Battle of Remagen March 7–25, 1945 · American victory
- Operation Lumberjack March 7–25, 1945 · Allied victory
- Battle of Frankfurt March 26–29, 1945 · American victory
- Battle of Nuremberg (1945) April 16–20, 1945 · American victory
- Operation Archway May 1945 · British victory
Battle of Okinawa April 1 – June 22, 1945 · Allied victory
- Operation Ten-Go April 7, 1945 · American victory
  - Operation Kikusui April 6 – June 22, 1945 · Allied victory
Operation Teardrop April 1945 – May 1945 · Allied victory
Vienna offensive April 2–13, 1945 · Allied victory
Battle of Königsberg April 6–9, 1945 · Soviet victory
Battle of Groningen April 14–18, 1945 · Canadian-Dutch victory
Bombing of Potsdam April 14, 1945
Battle of Berlin April 16 – May 2, 1945 · Soviet victory
- Battle in Berlin April 23 – May 2, 1945 · Soviet victory
Battle of the Seelow Heights April 16–19, 1945 · Soviet victory
Battle of Odžak April 19 – May 25, 1945 · Partisan victory
Battle of Halbe April 24 – May 1, 1945 · Soviet victory
Bombing of Obersalzberg April 25, 1945 · Allied victory
Operation Cowboy April 28, 1945 · Allied success
Battle of Castle Itter May 5, 1945 · Allied victory
Prague offensive May 6–11, 1945 · Allied victory
Battle of Kuryłówka May 7, 1945 · Polish victory
Battle of Poljana May 9–15, 1945 · Yugoslav victory
Operation Doomsday May 9, 1945 – August 1945 · Peaceful occupation
Battle of Slivice May 11–12, 1945 · Allied victory
Potsdam Conference July 17 – August 2, 1945
Bombing of Okazaki in World War II July 19, 1945
Battle of Sagami Bay July 22–23, 1945 · American victory
Atomic bombings of Hiroshima and Nagasaki August 6–9, 1945
- Atomic bombing of Hiroshima August 6, 1945
- Atomic bombing of Nagasaki August 9, 1945
Soviet–Japanese War August 9 – September 3, 1945 · Soviet victory
- Soviet invasion of Manchuria August 9–20, 1945 · Soviet victory
  - Battle of Mutanchiang August 16, 1945
- Soviet invasion of South Sakhalin August 11–25, 1945 · Soviet victory
- Soviet invasion of the Kuril Islands August 18 – September 1, 1945 · Soviet victory
  - Battle of Shumshu August 18–23, 1945 · Soviet victory
Seishin Operation August 13–16, 1945 · Soviet victory
Operation Jurist August 28, 1945 · British victory
Surrender of Japan September 2, 1945
- Japanese Instrument of Surrender September 2, 1945