German ambush question (spoiler)
I've watched this actioner a number of times since seeing it on its first release when I was a kid in 1964.
Watching it again, a question jumped out. How the heck did the Nazis find out about the Norwegian plans to attack the anti-aircraft emplacements?
Of course the film's plot demanded that the AA guns be in place - but there is nothing showing how the Germans knew where to ambush all those Norwegian fighters. Clearly the SS crew torturing George G. was destroyed before they could report - so how did they know?