

The new commander of a Navy Underwater Demolition Team--nicknamed "Frogmen"--must earn the respect of the men in his unit, who are still grieving over the death of their former commander and resentful of the new one.
Practical Effects
Actual underwater demolition footage—no tanks, real ocean, real danger.
Acting
Richard Widmark's twitchy intensity vs. Robert Wagner's golden boy smirk.

Director
Lloyd Bacon
Trivia, insights & behind the scenes
This was Hollywood's first major portrayal of UDT teams, released just six years after WWII ended when these units were still classified.
Richard Widmark hated water and couldn't swim—every underwater shot is a double or dry-for-wet staging, which makes his character's aquatic competence unintentionally hilarious.