Fanatical Arabs, wanting to end the war on their land and rid it of all infidels, simultaneously attack the Rat Patrol and the German convoy led by Dietrich. Both units are trapped in a small desert ruin, forcing them into an uneasy truce. One of the Germans, a liaison to the Arabs, tries to talk Dietrich into betraying the Rat Patrol to the Arabs, but he refuses. Later, the liaison attempts to go over to the Arabs himself, but they kill him. Dietrich and Troy construct a trap of their own, killing many of the Arabs and escaping.

An Arab convoy, disguised as Americans, traps and captures the Rat Patrol. The convoy's leader, Ned Cunningham, is an embittered American airman and hero turned traitor and gunrunner. He is about to sell Deitrich captured American weapons and equipment. He now sells to the highest bidder from his lavish desert compound, no matter which side. Ned feels that the Rat Patrol is costing him too much business and plans to eliminate them. But he then decides he likes the Patrol and will take them into the deal as partners if they cooperate. In the end, though, his duplicitous behavior causes his own death.