Allied agents stage a daring raid on a castle where the Nazis are holding American brigadier general George Carnaby prisoner, but that's not all that's really going on.
During World War II, a rebellious U.S. Army Major is assigned a dozen convicted murderers to train and lead them into a mass assassination mission of German officers.
A team of Allied saboteurs is assigned an impossible mission: infiltrate an impregnable Nazi-held Greek island and destroy the two enormous long-range field guns that prevent the rescue of 2,000 trapped British soldiers.