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During World War II, an American intelligence unit led by Col. Devlin (Gary Merrill) is recruiting German prisoners of war to infiltrate enemy lines and gather vital information. Lt. Rennick (Richard Basehart) heads a unit of Germans that includes the mistrustful "Tiger" (Hans Christian Blech) and the wide-eyed "Happy" (Oskar Werner). When word arrives that a German general is about to negotiate the surrender of his corps, Devlin sends Rennick and his volunteers on a dangerous mission. Wikipedia