Jagdgeschwader 52 included the fighter ace who joined the Luftwaffe in what year?
Gerhard Barkhorn Gerhard "Gerd" Barkhorn (20 March 1919 – 8 January 1983) was the second most successful fighter ace of all time after fellow "Luftwaffe" pilot Erich Hartmann, the two people to ever exceed 300 confirmed victories. Barkhorn joined the "Luftwaffe" in 1937 and completed his training in 1939.
Erbo Graf von Kageneck Erbo Graf von Kageneck (2 April 1918 – 12 January 1942) was a German fighter pilot and flying ace in the Luftwaffe from 1938 to 1942. He was credited with 67 aerial combat encounters resulting in the destruction of the enemy aircraft. He was the winner of the Knight's Cross with Oak Leaves.