jagdgeschwader  jg  was a luftwaffe fighter wing during the early phase of world war ii in europe jg  was founded on  july  in döberitz comprissed of one gruppe and two staffeln a third staffel was added on  november  in brandenburg-briest the sole gruppe was redesignated as rd gruppe of jagdgeschwader  iiijg  on  july  during the battle of france it was subordinated to luftflotte  the units commanders included hauptmann hannes trautloft from  september  to  july 