European theatre of World War II
September 1, 1939 – May 8, 1945 · Europe
Result Allied victory
Allied forces fought Nazi Germany and Italy on the Western, Eastern, Scandinavian and Mediterranean fronts in Europe. The fighting killed tens of millions, ended with Germany's defeat, and was the setting of the Holocaust.
Allies
Axis
Other
Battles 5
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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
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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
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Defence of the Reich September 4, 1939 – May 8, 1945 · Allied victory
- Battle of the Heligoland Bight (1939) December 18, 1939
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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