High Quality Content by WIKIPEDIA articles! The Gloster Meteor is a twin-engined jet fighter, the first jet aircraft to serve with the RAF and the only allied jet aircraft to reach combat in World War II. Almost 4,000 were produced, mostly in service with the RAF between 1944 and 1965. Meteors also served with the Royal Australian Air Force (RAAF), whose aircraft saw action in the Korean War, and other users included the Argentinian Air Force, the Brazilian and the Belgian air forces. Many are preserved but only five are airworthy.