Phantom Soldiers (1987) Sub.Ro.

Texas Ranger Daniel Custer leaves for Vietnam to find his brother Michael, a Green Beret Lieutenant who has been reported missing in action. Michael's squad was searching for a mysterious group of 'phantom soldiers' that had been using US-made arms for massacring villages and killing unarmed civilians. Daniel goes out on his own into the jungles of Vietnam to find his brother and stop these killers.