World War Two By unidentifiedflailingobject Sep 1, 1939 Germany Invades Poland Period: Sep 1, 1939 to Aug 15, 1945 WWII Sep 3, 1939 Great Britain and France Declare War on Germany Dec 7, 1941 Bombing at Pearl Harbor Jun 4, 1942 Battle of Midway Begins Jun 7, 1942 Battle of Midway Ends Apr 30, 1945 Hitler Commits Suicide May 7, 1945 Germany and Italy Surrender May 8, 1945 War with Germany Officially Ends Aug 6, 1945 Bombing of Hiroshima Aug 9, 1945 Bombing of Nagasaki Aug 15, 1945 War with Japan Ends