In 1943 a group of mismatched Allied soldiers are sent to sabotage two powerful Nazi guns situated on a Greek island. If their mission fails, the guns will wipe out the 2,000 British soldiers who are attempting to evacuate civilians further down the coast. The mission is led by the dispassionate Captain Mallory (Gregory Peck), whose clinical approach does not find favour with explosives expert Corporal Miller (David Niven). Meanwhile, the group's Greek patriot guide Andrea Stavros (Anthony Quinn) is nursing a grudge against Mallory for an old injustice. A belated sequel, 'Force 10 from Navarone', followed in 1978.