World War 2 in Europe By kevbradley1888 Sep 1, 1939 Germany invades Poland Sep 3, 1939 Britain declares war on Germany Apr 9, 1940 Nazis invade Denmark and Norway May 26, 1940 Evacuation of Allied troops from Dunkirk begins Jun 10, 1940 Norway surrenders to the Nazis Jun 10, 1940 Italy declares war on Britain and France Oct 5, 1940 Nazis invade France, Belgium, Luxembourg, and the Netherlands