WWII By popok Sep 1, 1939 Hitler Invades Poland. September 1, 1939, Hitler invades Poland. Sep 3, 1939 Three countries declare war on Germany. On September 3, 1939, Britain, France, Australia and New Zealand declare war on Germany. Sep 4, 1939 The British Royal Air Force attacks the German Navy. On September 4, 1939, the British Royal Air Force attacks the German Navy. Sep 2, 1945 WWII ends
