The de Havilland DH.100 Vampire was a British jet-engine fighter. It was commissioned by the Royal Air Force during the Second World War, and was the second jet fighter to enter service with the RAF, after the pioneering Gloster Meteor. Although it arrived too late to see combat during the war, it served with front line RAF squadrons until 1955, and continued in use as a trainer until 1966. It also served with many air forces worldwide, and set several aviation firsts and records.