World War II
World War II was the deadliest war in history. Fought on land, sea, and in the air, it killed more people and destroyed more property than any other war before or after it. On Europe, Asia, and Africa, about 17 million people died in bloody combat. Civilian deaths were ever higher due to bombing raids, disease, and hunger. Over six million European Jews died in concentration camps and slave camps set up by German Nazi leaders.
Despite it's horror, World War II is often called the "good war" because it pitted Germany, Italy, and Japan (nations with brutal dictators) against democratic nations like Great Britain and the United States.
From 1939 to 1945, six years of struggle, the democracies won, because they overpowers the enemy troops and industrial might, especially once the U.S. entered the war. However, the price of freedom was high and the road to victory was long and hard.