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The Invasion of Poland
The Invasion of Poland, also known as the September Campaign, Polish Campaign, and Polish Defensive War of 1939, was a joint attack on the Republic of Poland by Nazi Germany, the Slovak Republic, and the Soviet Union, which marked the beginning of World War II. -
Great Britain and France Declare War on Nazi Germany
following the German invasion of Poland two days earlier on September 1, 1939. -
The Invasion of Belgium, Luxembourg, Netherlands & France
Germany invaded the Netherlands, Belgium, Luxembourg, and France. Luxembourg was occupied that same day. The Netherlands surrendered on 15 May, Belgium on the 28th.