The German interrogator Hanns Scharf used no physical torture when interrogating allied pilots. This was unexpected for pilots expecting the "Vee haf vays of making you talk!" techniques they'd seen in movies.
He'd joke with them, give them booze, and even let one fly a Messerschmitt fighter. And they talked...
His prisoners, including ace Francis Gabreski, remained friends with him even after the war.
My dad, a WWII combat veteran, stated that he had some bit
of sympathy for the ordinary German soldier. Just not the
Nazi officers. One of them pulled an antic that reinforced
his attitude along those lines. (The ordinary German soldier
didn’t want to be there; had just gotten under Hitler’s
control by ALLOWING it.) The “I’m with Her Hillary crowd of
rabble rousers bear more resemblance to the Hitler Youth &
their worship of him back then than anything I’ve seen. The
dirty tricks of the Hillarybots at Trump rallies mirrored
the dirty tricks of the Nazis in Germany before the war.