World War II By djdansharp Sep 1, 1939 Start Of World War 2 Official start of World War 2 Sep 1, 1939 Invasion of poland by the Germans Period: Sep 1, 1939 to Sep 2, 1945 World War 2 Mar 5, 1941 Germany Has conquered - France ,Norway ,Holland and Denmark Jun 22, 1941 Germany invaded the Soviet Union Dec 7, 1941 Japan attack Pear Harbour Dec 8, 1941 Britain and the united states declare war on japan. Jul 12, 1943 Soviets counteract Attacks on Russia By Germany Jun 6, 1944 invasion of Normandy - D Day Aug 12, 1944 Germans Retreat Normandy May 7, 1945 Germany Surrenders Aug 6, 1945 Aliied Forces Bomb Heroshima Aug 8, 1945 Russia declares war on Japan Aug 15, 1945 V-J Day The day after japan Surrendered. Sep 2, 1945 End Of WorldWar 2 Japan Surrender.