Trying to narrow down service dates for the MG 151/20 Gondolas for Bf 109Gs on the Western Front and the BR 21 for Bf 109s and Fw 190s on the Western Front.
I've seen JG 1 and JG 11 in early spring 1943 with the BR21 then to other units later, what about Gondies?
Any definitive dates for large scale or theater wide service for both options?
Thanks!