Messerschmitt Me 262

The Messerschmitt Me 262 was the world's first operational jet fighter and the only jet fighter used in air-to-air combat during World War II. It became operational with the Luftwaffe in mid-1944 and was one of the most advanced combat aircraft of the conflict.
It was also employed as a light bomber, reconnaissance aircraft and experimented with as a night fighter. However, the aircraft suffered from reliability problems due to a shortage of strategic materials and compromises in the design of its Junkers Jumo 004 turbojet engines. source wikipedia