World War II was the first war in which jet aircraft participated in combat with examples being used on both sides of the conflict during the latter stages of the war. The first successful jet aircraft, the Heinkel He 178, flew only five days before the 1 September 1939 start of the war. By the end of the conflict on 2 September 1945 Germany, the United Kingdom, and the United States all had operational turbojet-powered fighter aircraft while Japan had produced, but not used, motorjet-powered kamikaze aircraft, and had tested and ordered into production conventional jets. Italy and the Soviet Union had both tested motorjet aircraft which had turbines powered by piston engines and the latter had also equipped several types of conventional piston-powered fighter aircraft with auxiliary ramjet engines for testing purposes. Germany was the only country to use jet-powered bombers operationally during the war. This list includes only aircraft powered by turbine engines, either on their own or as part of mixed-power arrangements. Rocket-powered aircraft are not included, nor are aircraft that only flew following the end of the war. Aircraft which were designed but not constructed are also excluded. Production figures for aircraft used postwar include examples built after the war ended, of the same versions already flying during the war. Aircraft |- ! width=18%|Name !! Origin !! First flight !! Type !! Entered service !! Number built !! Notes |- | Arado Ar 234 || Germany || || Combat || || + || First jet bomber but used mostly for reconnaissance. Few ever flew. Night fighter tested operationally. |- | Bell P-59 Airacomet || US || || Operational || || || First USAAF jet to fly, used as trainer only. |- | Bell XP-83 || US || || Prototype || n/a || || Cancelled long-range escort fighter. |- | Caproni Campini N.1 || Italy || || Prototype || n/a || || First motorjet. |- | Consolidated Vultee XP-81 || US || || Prototype || n/a || || Cancelled mixed-power fighter. |- | Curtiss XF15C || US || || Prototype || n/a || || Cancelled mixed-power fighter. |- | de Havilland Vampire F.1 || UK || || Production || || || Only 12 produced before VE Day; no combat service. |- | Douglas XBTD-2 Destroyer || US || || Prototype || n/a || || Cancelled mixed-power torpedo bomber |- | Fieseler Fi 103R Reichenberg || Germany ||