World War II Timeline By AliSilk Sep 3, 1939 Invasion of Poland Germany invade poland and declare war on the 3rd of September. Sep 10, 1939 Canada declares war on Germany; Battle of the Atlantic begins. Apr 9, 1940 Germany invade Denmark and Norway May 15, 1940 Hollan surrenders to the Nazis May 26, 1940 Evacuation of Allied troops from Dunkirk begins. May 28, 1940 Belgium surrenders to the Nazis. Jun 3, 1940 Germans bomb Paris; Dunkirk evacuation ends. Jun 10, 1940 British forces in North and East Africa are on alert as Italy declares war on Britain and France. Aug 20, 1940 Churchill made his famous speech to Parliament Jun 22, 1941 Operation Barbarossa begins as Germany invades Russia Dec 11, 1941 Japan bombs Pearl Harbor Jun 6, 1944 D day, the first day of the allied invasion of Normandy Aug 6, 1945 The first atomic bomb to be used as a weapon is dropped on Hiroshima Sep 2, 1945 The end of World War II