There is of course a famous story of USAAF crew being removed from a Concentration Camp and the SS by a visiting Luftwaffe officer.
Our German aviator friends have a history of displaying gentlemanly conduct towards fellow aviators - it was (in the early 20th century) almost standard protocol among flyers worldwide (both civil and military) to treat one another with considerable respect.
Manfred von Richthoften and his "circus" initiated numerous encounters with our forefathers during WWI.
They were different times with different principles. The days of decency have long since gone!