Gregory Peck, David Niven and Anthony Quinn star in this classic war drama directed by J. Lee Thompson. 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 (Peck), whose clinical approach does not find favour with explosives expert Corporal Miller (Niven). Meanwhile, the group´s Greek patriot guide Andrea Stavros (Quinn) is nursing a grudge against Mallory for an old injustice.