In 1943, the Axis powers plan an assault on the island of Kheros, where 2,000 British soldiers are marooned, to display their military strength and convince neutral Turkey to join them. Rescue by the Royal Navy is prevented by two massive radar-directed large-calibre guns on (fictional) nearby Navarone Island. When aerial bombing efforts fail, Allied Intelligence gathers a commando unit to infiltrate Navarone and destroy the guns. Led by Major Roy Franklin (Anthony Quayle), the team is composed of Captain Keith Mallory (Gregory Peck), a renowned spy and an officer with the Long Range Desert Group (LRDG); Colonel Andrea Stavrou (Anthony Quinn) from the defeated Greek Army; Franklin's best friend Corporal Miller (David Niven), an explosives expert and former chemistry teacher; Greco-American Spyros Pappadimos (James Darren), a native of Navarone; and "Butcher" Brown (Stanley Baker), an engineer and expert knife fighter.