The Germans didnt hear much about the bomb raids of course and less about the damage. I have been looking for my fathers record of Dambusters - 1943 - unpublished diaries
nothing yet: I found - harrowing text follows - he was British but had volunteered for other POW work:
"Doctors looking after the Russians were usually Poles or Serbs because again Russia not having signed the (Geneva) Convention there were no Protected Personnel and everyone was simply drafted out for work, if they survived the Front and the Journey Down the Line. Intellectuals tend to be more frail that the private soldier and in fact one of the latter said bitterly " They are trying to liquidate our Intelligentsia".
"In conversation with a Serb doctor I said " The German doctor here seems quite reasonable."
"Yes he is all right - except for his taste for experimentation. He experiments on the Russians. He has conducted numerous experiments with Typhus. He injects it into them. Curiously enough they seem pretty resistant. Even when they get it it is pretty mild."
"Later he added: I have always been anti communist but I go home and tell them what I have seen , they will say it is Russian propaganda I have swallowed. The punishments can be quite simple. Lock a man naked in a concrete cell , hose him down and leave him there on a cold night. It is surprising that so many survive."
My fathers sacrifice and those of the Russians were involuntary by the way - he later said never volunteer for anything
NB POW camp, NOT concentration camp which were much worse