World War II Timeline By kevjimdrew Mar 1, 1939 Annexation of Czech May 22, 1939 Pact of Steel Sep 1, 1939 Invasion of Poland Sep 3, 1939 Declaration of War of Germany Oct 12, 1939 Partition of Poland May 10, 1940 Invasion of the Low Countries and France May 26, 1940 Evacuation of Dunkirk Jun 22, 1940 Frace Surrenders to Germany Jul 10, 1940 Battle of Britain Begins Sep 22, 1940 Tripartite (Axis) Pact Mar 11, 1941 Lend-lease Act Jun 22, 1941 Operation Barbarossa Begins Jul 31, 1941 Final Solution Dec 5, 1941 Germans abandon attack on Moscow Dec 7, 1941 Pearl Harbor bombed Dec 8, 1941 U.S. declares war on Germany and Japan Jun 1, 1942 Auschwitz opens Nov 1, 1942 Battle of Stalingrad May 13, 1943 German and Italian surrender in North Africa Jul 9, 1943 Allies land in Sicily Sep 3, 1943 Italy surrenders Oct 13, 1943 Italy declares war on Germany Jun 6, 1944 D-Day Jul 20, 1944 Failed assassination of Hitler Dec 16, 1944 Battle of the Bulge Apr 27, 1945 Mussolini hanged Apr 30, 1945 Hitler commits suicide Jul 18, 1945 Potsdam Aug 6, 1945 Hiroshima bombed Aug 9, 1945 Nagasaki bombed Aug 9, 1945 V-J Day Oct 24, 1945 U.N. established Oct 1, 1946 Nuremberg Trials begin