The Knight"s Cross of the Iron Cross was awarded to recognise extreme battlefield bravery or successful military leadership. Otto Bischoff was killed on 2 April 1942 over the island of Malta. He was posthumously awarded the Knight"s Cross on 3 May 1942.
Bibliography.
Flugzeugführerabzeichen Front Flying Clasp of the Luftwaffe Iron Cross (1939) 2nd Class 1st Class German Cross in Gold on 15 December 1941 as Oberleutnant in the 6./Kampfgeschwader 77 Knight"s Cross of the Iron Cross on 3 May 1942 (posthumously) as Oberleutnant and Staffelkapitän of the 4./Kampfgeschwader 77.
