jeffb,
There were many cases of this kind reported after the war, and in almost every instance the Gestapo were involved. Some time back I've told of a story (believed to be true), where the officers of a
Jagdgeschwader in southern Germany, hearing that a group of RAF prisoners passing nearby were destined to be handed over for imprisonment to a Gestapo unit, intervened and forced the Gestapo officer in charge, at pistol point, to release the prisoners to them.
They then took them back to their squadron, gave them a decent meal, and made sure they went on to a proper POW Camp. It pays dividends: more flies are caught by honey than by vinegar (as every interrogator knows). And as Kipling put it a century ago:
"Where is the sense of 'ating those
'Oom you are paid to kill ?"
Danny.