German troops occupy the Sudetanland.
Night-time raids throughout London and Manchester and fifteen airfields attacked. Germans postpone Operation Sea Lion until Spring of 1941. Jews are formally banned from public service, industry, the media and positions of authority in Vichy, France.
Poland surrenders to Germany.
The first Moscow Conference of World War II, involving, the United Kingdom, the United States, and the Soviet Union, is held. Averell Herriman, representing the U.S. and Lord Beaverbrook, representing the U.K., met with Joseph Stalin of the Soviet Union, to give assurances that both the U.S. and the U.K. would aid and support the Soviet Union in the common fight against Nazi Germany.
Great Britain, France, New Zealand, Canada, and Australia declare war on Germany. Prime Minister Chamberlain was reluctant but capitulated to the necessity for the war declaration.
U.S.A. proclaims neutrality in the war in Europe.
British troops land on mainland Italy, beginning the Allied campaign in Italy.