Manfred von Richthofen, the "Red Baron," was the World War I German aviator who commanded the flying squadron that became known as Richthofen's Flying Circus. He was the war's most successful flying ace, shooting down 80 aircraft before being killed in action. In April 1918, he was shot in the chest while dogfighting over France. He managed to land his plane but died soon after. The Red Baron has since become a symbol of dexterity, daring, and victory. Who fired the shot that killed him?