Hello, fellow classic movie lovers, I need some help identifying a movie.. It's a black and white movie about WWII, I've seen it many times on TCM but I don't know the name. One very famous actor was in it, at a young age, though I don't have a name. What I can tell you is this: it was about an infiltration / sabotage of a German base, the good guys managed to blow it up in the end and some of them escaped with a plane. The action took place at a snowy location... If it rings a bell, please tell me a name or any clue!! I would be forever grateful!