Fortress of the Dead (1965)

Director: Ferde Grofe Jr.
Actors: John Hackett, Conrad Parham, Eddie Infante, Jennings Sturgeon
Runtime: 75 min.

Twenty years after the end of World War II, an American veteran returns to the Philippines, where a large number of his comrades perished in a bunker during combat. Eerie and unsettling events ensue amidst the island's ruins.