Besatzung "König" and "Vollmer" 2./KG53

[Thomas H]

Besatzung "König" was shot down by own Flak on 2.1.1943 I don't know under which circumstances. One of the crewmembers was at that time in Halle for recovery in a lazaret. Does someone know the name of this 5th crewmember?

FF - König, Ernst (DKiG 27.10.1942)
BO - Wiczorek, Erwin
BM - Müller, Heinz
BS - Abel, Alfred
BF/BS - ???

This 5th unknown crewmember was in late 1943 part of Besatzung "Vollmer". Does someone have the names of this crew?

FF - Vollmer, Hans???
BO - Gebert, Hans (DKiG 22.07.1943)
BF - ???
BS - ???
BM - ???

Thanks in advance!

Thomas