World War II Mrs. Brunell By mbrunell Sep 1, 1939 Invasion of Poland •Hitler invades Poland on 1 September. Britain and France declare war on Germany two days later. Period: Sep 1, 1939 to Aug 14, 1945 Major Events of World War II BBC History WWII Timeline May 10, 1940 Germany attacks •German 'Blitzkrieg' overwhelms Belgium, Holland and France.
