Unmentioned inspiration
Quite curious that nobody ever mentioned the similarity between this film's premise (dressing as the adverse party, a war crime called "perfidy" per the Geneva Convention) and the James Bond author Ian Fleming's "honorable" idea which I quote from his Wikipedia page, where you can also find the bibliographical reference:
"Operation Ruthless, a plan aimed at obtaining details of the Enigma codes used by the German Navy, was instigated by a memo written by Fleming to Godfrey on 12 September 1940. The idea was to "obtain" a Nazi bomber, man it with a German-speaking crew dressed in Luftwaffe uniforms, and crash it into the English Channel. The crew would then attack their German rescuers and bring their boat and Enigma machine back to England."
The operation has an entire Wikipedia page for itself:
https://en.wikipedia.org/wiki/Operation_Ruthless