WWII Main Events By madisondenise Sep 1, 1939 Germany invaded Poland Period: Sep 1, 1939 to Sep 2, 1945 WWII Main Events Sep 3, 1939 Britain, Australia, New Zealand and France declare war on Germany Sep 5, 1939 US declares it's neutrality Jul 10, 1940 Battle of Britain Dec 7, 1941 Japan attacks Pearl Harbor Dec 8, 1941 US declares war on Japan Jun 6, 1944 D-Day May 8, 1945 VE Day (Victory in Europe) Aug 14, 1945 The Japanese Surrender Sep 2, 1945 WWII Ends