Jagdgeschwader 20
Jagdgeschwader 20 was a Luftwaffe fighter wing during the early phase of World War II in Europe. JG 20 was founded on 15 July 1939 in Döberitz, composed of one Gruppe and two Staffeln using personnel and equipment from I./Jagdgeschwader 2. A third Staffel was added on 5 November 1939 in Brandenburg-Briest. The sole Gruppe was redesignated as 3rd Gruppe of Jagdgeschwader 51 on 4 July 1940. During the Battle of France it was subordinated to Luftflotte 2. The unit's commanders included Hauptmann Hannes Trautloft, from 19 September 1939 to 4 July 1940.