Continuity mistake: The film is set on the Western Front during WWI but was filmed in Ireland in 1965. As George Peppard is driving to join his squadron for the first time the camera pans the horizon and loads of houses can be seen to have TV aerials.
The Blue Max (1966)
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Directed by: John Guillermin
Starring: James Mason, George Peppard, Ursula Andress, Jeremy Kemp
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More mistakes in The Blue Max
Kettering: No confirmation, no claim. That's a squadron rule.
Bruno Stachel: But I saw it! It was a kill.
Kettering: Then, you have the deep satisfaction of knowing you have served the Fatherland.
Trivia: The number of the Berlin hotel room Bruno Stachel stays in the night before he is to be awarded the Blue Max is '22', which equals the number of planes he has shot down. He needed only 20 to win the award, but he had to shoot down two more in order to make up for Willy's kills that he claimed as his own earlier in the film.