Here is some info over the pilot who shot the Lancaster ME737 :

Hauptmann Heinz Rökker  20/10/1920

Luftwaffe Ace Rökker was credited with 64 victories in 161 missions, he recorded 63 of his victories at

night,  including 55 four engined bombers. He was part of unit NJG2.

  Awards : 

•   Ehrenpokal  12/06/1944
•   Deutsches Kreuz in Gold 13/06/1944
•   Ritterkreuz 27/07/1944
•   Eichenlaub 12-03-1945

  Source : Didier Jadot  (www.luftwaffe.cz/rokker.html)