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.
Otto Höhne Leutnant Otto Paul Wilhelm Höhne (30 April 1895 – 22 November 1969) was a German World War I flying ace credited with six confirmed aerial victories. Höhne was a pioneer ace; he was the first pilot to score a victory while flying the Albatros D.1 During World War II he was a recipient of the Knight's Cross of the Iron Cross.