Giovanni Lambardo Radice and John Saxon are Vietman vets that bring back contagious virus that turn people into cannibals when bitten.
Cannibal Apocalypse (Italian: Apocalypse Domani, also known as Invasion of the Flesh Hunters) is a 1980 horror film directed by Antonio Margheriti. The film combines the horror genre with a forerunner of Margheriti's Vietnam War films.