Above Us the Waves (1955)

Synopsis
Judging by the number of times it has shown up on TV, Above Us the Waves may be American viewers' favorite British war film. Most of the film is set in a British midget submarine, commandeered by John Mills. The sub's mission (together with its "fellow" vessels) is to sink the German battleship Tirpitz. This will be accomplished by the midget sub fleet sneaking into Norwegian waters, floating beneath the Tirpitz, then planting explosives. Only Mills' sub manages to complete the mission. Based on a true-life 1943 incident, Above Us the Waves takes a revisionist approach by showing the German officers and seamen to be human beings rather than faceless minions of Hitler. ~ Hal Erickson, All Movie Guide