According to Michael Powell's book, "Million Dollar Movie," the film's composer, Mikis Theodorakis, considered it shameful that a story about Cretan resistance fighters would be told by anyone other than Cretans. He told Powell and Pressberger that they were both political "interlopers" -- a label he also used in describing Patrick Leigh Fermor.
The General was never identified by his first name in the film. In the credits he is referred to as Maj. Gen. Kreipe. In real life he was Majorgeneral Heinrich Kreipe. Calling him Karl, as many sources do, seems to have been an invention of the Rank publicity department.
This was the last official film to be made by "The Archers", the team of Michael Powell and Emeric Pressburger. The film was made under very difficult conditions due to the interference of the Rank Organization, for whom they made it.However, they did collaborate again, with Pressburger writing the screenplay (under a pseudonym) for Powell's Australian film "They're A Weird Mob" and later for his 42-minute children's film, "The Boy Who Turned Yellow".