This is an unpretentious WWII movie that took me by surprise. There are no bells and whistles, the plot is basic (a new by-the-book officer earns the respect of his men), but the focus on what "frogmen" (Underwater Demolition Teams) do is quite captivating.
The cast is terrific. Richard Widmark is the new officer, and Dana Andrews is the old timer who has to be convinced he is okay. Jeffrey Hunter has a good role, and there are plenty of other familiar faces.
But what makes the movie is seeing how the frogmen deploy for their raids and how they are picked up. This is a war movie that goes into the mechanics of the action more than most I can think of, and it is pretty fascinating for that.