Oberst im Generalstab Heinrich Wittmer (28 February 1910 - 27 June 1992) is a Luftwaffe bomber ace who received the Ritterkreuz des Eisernen Kreuzes on 12 November 1941 as Hauptmann and Gruppenkommandeur III.Gruppe / Kampfgeschwader 55 (KG 55) "Greif". He was awarded the prestigious medal for his success as a bomber pilot in missions against England in 1940 (where his bombers particularly distinguished themselves in an attack on the Westland aircraft factory in Yeovil) and against the Soviet Union in the summer of 1941. He flew a total of 184 combat missions in his entire active military career.
Source :
https://reibert.info/media/albums/rycarskij-krest-zheleznogo-kresta-1.5054/?page=2
https://www.tracesofwar.com/persons/49339/Wittmer-Heinrich.htm?c=aw