Jungle Heat.

Towards the end of the Vietnam war, the US is running low on drivers for their supplies so they bring in a new lot of recruits and have to train them to survive in the dangers of wartorn Vietnam. The recruits are trained briefly by an American officer but are quickly handed off to their South Vietnamese officers and are made to go out into the dangers of Vietnam without getting the protection they need by the Americans who are more concerned with withdrawing their own troops instead of protecting the South Vietnamese