In my youth, I knew a fellow who had been on Closterman's squadron in France and Germany towards the end of the war. He flew as Closterman's wingman (apparently a very unpopular and unhealthy job) and did not have a good word to say about the man - in fact, he had quite a few words to say about him, all of which would invite cries of outrage from the 'don't speak ill of the dead' brigade.