Well I have, a few survived to tell the tale, I didnt say army I said military. RAF bomber crews were killed by civilians and others were killed after being handed over to military authorities. Once they were dubbed "terror fleigers" by German propaganda, observation of the rules of war were forgotten.They were hoping to land critical hits anywhere possible , especially considering the closing speed
Ι have never read bomber crews executed by official army. I do have read that individual bomber crews members were killed by German civilians