World War II was the worst war in history and killed more people than any other war before. It lasted from 1939 to 1945 and, starting out from Europe, spread to nearly every part of the world
About 17 million soldiers died during six years of the war. Even more civilians - men, women and children - died from bomb attacks, illnesses or starvation. Millions of Jews died in German concentration camps. The war left many other people without jobs and homes.
Bombers in World War II
Image : Bundesarchiv, Bild 101I-646-5188-17 / Opitz / CC-BY-SA 3.0, CC BY-SA 3.0 DE, via Wikimedia Commons