Force 10 from Navarone is a 1978 British-American action drama war film loosely based on Alistair MacLean's 1968 novel of the same name. It is a sequel to the 1961 film The Guns of Navarone. The parts of Mallory, Miller and Barnsby are played by Robert Shaw (who died before the film was released), Edward Fox and Harrison Ford, succeeding the roles originally portrayed by Gregory Peck, David Niven and Richard Harris. It was directed by Guy Hamilton and also stars Carl Weathers, Barbara Bach, Franco Nero (in a "plastic surgery" role previously played by Tutte Lemkow), and Richard Kiel.
The film gets its title from the Alistair MacLean book of the same name, but bears little resemblance to the narrative of the novel. The differences are so apparent that MacLean would go on to loosely adapt part of the screenplay into his 1982 book Partisans.
(Summary from Wikipedia)