World War 2 By Goodwin_Zeyue Sep 1, 1939 Germany invades Poland Sep 3, 1939 France and Britain delcare war on Germany Sep 29, 1939 France and Britain declare war on Germany Period: Jun 1, 1940 to Jul 1, 1940 France falls to Germany. Germany begins Battle of Britain Sep 1, 1940 Japan signs Triparite Pact with Germany and Italy Jun 29, 1941 Germany invades the Soviet Union Dec 7, 1941 Japan attacks Pearl Harbor