Terminus (2011)

Soldiers Nate Sulero and Jason Prestin are on a routine patrol when their truck is destroyed by a roadside explosive that kills two of their own men. Capturing the hostile they believe is responsible for the attack, they make the long and dangerous trek back to base camp. As the desert heat rises, the two men are torn between keeping the prisoner alive and exacting their revenge upon him, all while a war rages around them.