World War II By Sunnykim13 Sep 1, 1939 German Invasion of Poland World War II in Poland Period: Sep 1, 1939 to Sep 2, 1945 World War II Sep 3, 1939 Britain and France Declare War on Germany History.com Sep 17, 1939 Soviets Invade Poland Apr 9, 1940 Germans Take Oslo Mar 1, 1941 Hitler Gives Order for Auschwitz Prison Camp Expansion Holocaust Museum Jul 4, 1941 Mass Murder of Polish Scientists and Writers Dec 7, 1941 Japan Attacks Pearl Harbor Pearl Harbor Dec 8, 1941 US Declares War on Japan Jan 1, 1942 26 Countries Sign Declaration by UN Jun 4, 1942 Battle of Midway Apr 19, 1943 Palm Sunday Massacre May 1, 1943 Allies Close in on Germans in Tunis Sep 8, 1943 Italy Surrenders to US Jan 20, 1944 Bombing of Berlin by Royal Air Force Jun 6, 1944 D-Day D-Day Memorial Dec 16, 1944 German Offensive on the Western Front Apr 12, 1945 President Roosevelt Dies - Succeeded by Harry S. Truman Aug 6, 1945 The US Drops the first Atomic Bomb on Hiroshima US drops bombs on Japan Aug 9, 1945 US Drops Second Atomic Bomb on Nagasaki Aug 14, 1945 V-J Day Victory over Japan Day Sep 2, 1945 Japan's Official Surrender Japan Surrenders Document
