The Rat Patrol (1966) : 1x10

Fanatical Arabs -- wanting to end the war on their land -- attack both the Rat Patrol and the German convoy that Dietrich leads, trapping both in a small desert fortress. This forces the two teams into a truce. One of the Germans -- a liasion to the Arabs -- tries to talk Dietrich into betraying the Rat Patrol to the Arabs but he refuses. In the end the liasion tries to go over to the Arabs himself. He ends up killed, and Dietrich and Troy are able to construct a trap of their own -- killing most of the Arabs and escaping.