(With apologies for another derailment, or at least diversion.) I'm a bit puzzled by this. We all knew about Bert's war service, of course, so do you mean it was his membership of the Hitler Youth that he'd kept quiet about? I thought that was frankly admitted in both Bert's own "Steppes to Wembley" and the Alan Rowlands biography, though I don't have either book to hand so could be wrong about that. Also, didn't the British interrogators classify him as having had Nazi Party membership rather than being just an ordinary soldier when he first arrived in England as a P.O.W? Have to dig the books out of the closet and look this up.The disappointment for me was that my first City hero lied about his Nazi past, denying it until near his death when he finally came clean.
Anyway, thanks to you and to LIz for the link to the Manchester rabbi's letter, etc.