Quick one as I just came home from an airshow
In a bookstall I saw the new JaPo book about Dora camouflage. It said Brenner was MIA in 210909 "Red 9" of 6/JG 301.
Funnily enough it also had another record for 210909 for a 15% crashlanding
after this date.
211909 was shot down by flak over Cottbus, also
after this date.