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Germany invades Poland, starting WW2. -
the Royal Air Force and the Fleet Air Arm of the Royal Navy defended the United Kingdom against large-scale attacks by Nazi Germany's air force, the Luftwaffe. It was the first major military campaign fought entirely by air forces. -
The United States signs Lend-Lease Act into law -
Japan bombed Pearl Harbor, a United States military harbor. -
Fighting starts in the Pacific. -
The United States declares war on Germany and its allies. -
The Bataan Death March was the forcible transfer by the Imperial Japanese Army of between 75,000 American and Filipino prisoners of war from Saysain Point, Bagac, Bataan and Mariveles to Camp O'Donnell, Capas, Tarlac, via San Fernando, Pampanga, the prisoners being forced to march despite many dying on the journey -
The Doolittle Raid, also known as the Tokyo Raid, was an air raid on 18 April 1942 by the United States on the Japanese capital Tokyo and other places on Honshu during World War II. It was the first American air operation to strike the Japanese archipelago. -
The Battle of Midway was a major naval battle in the Pacific Theater of World War II that took place on 4–7 June 1942, six months after Japan's attack on Pearl Harbor and one month after the Battle of the Coral Sea. -
The Battle of Stalingrad was a major battle on the Eastern Front of World War II where Nazi Germany and its allies unsuccessfully fought the Soviet Union for control of the city of Stalingrad in Southern Russia. -
The Battle of Tarawa was fought on 20–23 November 1943 between the United States and Japan at the Tarawa Atoll in the Gilbert Islands, and was part of Operation Galvanic, the U.S. invasion of the Gilberts. -
The Allied powers land on Normandy Beach. -
The Battle of the Bulge, also known as the Ardennes Offensive, was the last major German offensive campaign on the Western Front during World War II. The battle lasted for five weeks from 16 December 1944 to 28 January 1945, towards the end of the war in Europe. -
On January 27, 1945, Soviet troops enter Auschwitz, Poland, freeing the survivors of the network of concentration camps—and finally revealing to the world the depth of the horrors perpetrated there. -
Meeting with the Allied Powers about the distribution of powers for Germany and its allies. -
President Roosevelt dies because of health concerns. -
The day the war in Europe is won by the Allies. -
The day the Allies win the war over Japan. -
The United States drops Little Boy on Hiroshima. -
The United States drops Fat Man on Nagasaki -
The creation of the United Nations for world peace.