World War II Timeline
March 15, 1939
German troops enter Prague and complete the invasion of Czechoslovakia, ignoring the Munich Pact.
March 31, 1939
Britain declares that it will support Poland.
Italy invades Albania.
Allies form non-aggression pacts with Turkey, Greece, Romania, and Poland.
August 23, 1939
Germany and the USSR sign a secret non-agression pact dividing up Poland.
September 1, 1939
Germany invades Poland.
September 3, 1939
Britain, France, Australia and New Zealand declare war on Germany after German forces penetrate deeper into Poland. This marks the beginning of World War II.
September 10, 1939
Canada declares war on Germany.
September 17, 1939
The USSR invades eastern Poland.
September 27, 1939
Poland surrenders to Germany.
November 30, 1939
The Russo-Finnish War begins when the USSR invades Finland.
December 18, 1939
The first Canadian troops arrive in Britain.