Plot: This is the true story of how a group of Royal Marines were taken by submarine to the mouth of the river Gironde from where they went by kayak to attack the "unassailable" port of Bordeaux (3 days journey) They laid limpet mines on many German warships & freighters causing major devastation. The next problem was how could they get away ...
Alternative Plot: Maj. Stringer (Jose Ferrer) needs to assemble a crack squad of British Royal Marines for a highly unusual mission. Though Capt. Thompson (Trevor Howard) is extremely skeptical, he dutifully helps his new superior recruit and train the needed men. Their audacious plan involves transporting a small group of soldiers by submarine to the coast of occupied France, where they will kayak along an estuary into a Nazi shipyard and commit sabotage. Chances for success are very small.
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