✦ History

Invasion of Poland

September 1 – October 6, 1939

Nazi Germany invaded Poland on 1 September 1939, and the Soviet Union invaded from the east on 17 September under the secret protocol of the Molotov-Ribbentrop Pact. Germany, the Soviet Union, and the Slovak Republic overran Polish defenses, and the campaign ended on 6 October with Poland divided between Germany and the Soviet Union. The invasion marked the beginning of World War II in Europe.

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Battles and events 14

1939 – September 10, 1939
Battle of Wizna Łomża
1939 – September 27, 1939
Bombing of Warsaw in World War II Warsaw
September 1–16, 1939
Slovak invasion of Poland Poland
September 1, 1939
Defence of the Polish Post Office in Danzig Polish Post Office in the Free City of Danzig
September 1, 1939
Bombing of Wieluń Wieluń
September 1–3, 1939
Battle of Mława Uniszki Zawadzkie
September 1–7, 1939
Battle of Westerplatte Westerplatte
September 1, 1939
Battle of Danzig Bay Pomeranian Voivodeship
September 1939
Battle of the Border Poland
September 8–28, 1939
Siege of Warsaw (1939) Warsaw Johannes Blaskowitz
September 9–19, 1939
Battle of the Bzura Kutno Gerd von Rundstedt, Wilhelm Ritter von Leeb, Günther von Kluge
September 9 – October 2, 1939
Battle of Hel Hel Peninsula
September 13–29, 1939
Battle of Modlin Modlin
October 2–5, 1939
Battle of Kock (1939) Kock

Key commanders

Axis 11

Adolf Hitler Ordered German invasion Joseph Stalin Ordered Soviet Invasion Hermann Göring Commander, Luftwaffe Semyon Timoshenko Commanded the Ukrainian Front in the Soviet invasion Fedor von Bock military commander Albert Kesselring military commander Franz Halder military commander Günther von Kluge military commander Johannes Blaskowitz military commander Gerd von Rundstedt military commander Wilhelm Ritter von Leeb military commander

Allies 3

Neville Chamberlain Declared war, British Prime Minister Edward Rydz-Śmigły military commander Tadeusz Kasprzycki military commander