Heinkel He-162 Volksjager

The Heinkel He-162 Volksjäger was used by the German Luftwaffe in the final months of World War II (early 1945), primarily assigned to JG 1 (Jagdgeschwader 1) in northern Germany. Designed as an emergency, low-cost jet fighter, it saw limited operational service, with a few units engaging in ground attack missions. 
 
Key details regarding its use include:
Operational Units: The main unit equipped with the He-162 was JG 1 "Oesau," which operated the fighter from bases like Leck.
Combat Missions: It saw very limited air-to-air combat, with some pilots conducting ground attacks against enemy vehicles.
Operational Challenges: The aircraft was notoriously difficult to fly, with early, hasty production leading to structural issues.
Manufacturing: Production took place at various sites, including underground facilities in Hinterbrühl, Austria, and at the Heinkel factory in Rostock-Marienehe.
Post-War Use: After the German surrender, several captured He-162s were transferred to the UK, the U.S. (tested at Muroc Field and Freeman Field), and the Soviet Union for evaluation. 
 
Although over 100 were delivered to the Luftwaffe, many remained unused, and the program was deemed a desperation measure.