American Warrior

American Ninja is a movie starring Michael Dudikoff, Steve James, and Judie Aronson. American soldier, obviously very skilled in martial arts, single-handedly takes on mercenaries in the Philippines.
Joe Armstrong, an orphaned drifter with little respect for much other than martial arts, finds himself on an American Army base in The Philippines after a judge gives him a choice of enlistment or prison. On one of his first missions driving a convoy, his platoon is attacked by a group of rebels who try to steal the weapons the platoon is transporting and kidnap the base colonel's daughter.