September 1939

Friday 01:

The Wound Badge for Wehrmacht and SS soldiers is instituted.

Saturday 02:

Following the invasion of Poland, Freie Stadt Danzig Danzig (now Gdańsk, Poland) is annexed to Nazi Germany.

Sunday 03:

World War II: France, the United Kingdom, New Zealand, and Australia declare war on Germany.

Tuesday 05:

World War II: The United States declares its neutrality in the war.

Wednesday 06:

World War II: South Africa declares war on Germany.

Sunday 10:

Canada declares war on Nazi Germany.

Wednesday 13:

Canada enters World War II.

Sunday 17:

The Soviet Union joined Nazi Germany's invasion of Poland during the Polish Defence War of 1939.

Thursday 21:

Romanian Prime Minister Armand Calinescu is assassinated by pro-Nazi members of the Iron Guard.

Thursday 28:

Warsaw surrenders to Nazi Germany during World War II.

Friday 29:

Poland is divided between Nazi Germany and the Soviet Union.

Saturday 30:

General W?adys?aw Sikorski becomes commander-in-chief of the Polish Government in exile.