Jagdgeschwader 52 included the fighter ace who joined the Luftwaffe in what year?
Jagdgeschwader 52 "Jagdgeschwader" 52 (JG 52) (52nd Fighter Wing) of the Luftwaffe, was the most successful fighter-wing of all time, with a claimed total of more than 10,000 victories over enemy aircraft during World War II. It was the unit of the top three scoring flying aces of all time, Erich Hartmann, Gerhard Barkhorn and Günther Rall. The unit flew exclusively with the various versions of the Messerschmitt Bf 109 throughout the war.
Theo Osterkamp Theodor "Theo" Osterkamp (15 April 1892 – 2 January 1975) was a German fighter pilot during World War I and World War II. A flying ace, he achieved 32 victories in World War I. In World War II, he led Jagdgeschwader 51 through the Battle of Britain and claimed a further 6 victories, in the process becoming one of only a few men to score victories in both world wars.