From the back of the book: The Guns of Navarone is an exciting adventure based on the classic movie of WWII commandoes on an impossible mission. Intended fro use with FASA's WWII role-playing system Behind Enemy Lines, the adventure allows players and a GameMaster to recreate the movie, or explore any number of possible alternatives. Complete character descriptions (including new characters to give a greater number of options fro treachery and intrigue), thorough maps, and new rules, plus complete event tables and situation descriptions hight this Behind Enemy Lines mission.