[Chgogal]

I think you are thinking of Father Goose. Good, funny movie taking place during WW2. Cary Grant is an American history professor escaping the real world. He gets recruited by the British Navy (Trevor Howard) to be a watcher. He ends up rescuing Miss Goody Two-shoes and embassy kids. In the end he, his new wife and the embassy kids get rescued by an American sub.

[OKSooner]

Yes, that was it, thank you.