Raiders Of The Doomed Kingdom (1985)

A band of Thai mercenaries embark on one last mission to save a general after the Fall of Saigon. Posing as Chinese Red Guard, they infiltrate a compound and regain the general only to be given chase. Racing to the shore, while picking up several female soldiers, they escape on a fishing boat with their pursuers in toe. The jungle island both parties reach happens to be a leper colony, and while the horribly disfigured inhabitants are friendly, they become pawns in the ensuing battle. Now the mercs must dig in for their lives against a Red Guard commander who just doesn't relent.