Troy and Hitchcock capture Col Beckmann, an infamous Nazi POW camp commander. Beckmann denies that he is the man. In a fight, Troy gets knocked out, and Hitch is wounded. Using Troy's gun, Beckmann kills the other German captured with him, exchanges dog tags with him, and places the pistol near Troy's hand. Thus, Troy gets falsely accused of the murder. Moffitt and Tully only arrive afterward. To prove to a court-martial board that Beckmann is Beckmann, the rest of the Rat Patrol must infiltrate a German division's headquarters to find the evidence to prevent Troy's court-martial--at considerable risk to their own lives.

Using a telephoto lens, Moffitt and Troy photograph a map inside Captain Dietrich's office from the roof of the adjoining Nazi HQ. It shows the location of a top-secret German ammo dump. The Patrol must reach the site, enter it, and destroy it before half of the German army arrives. The Patrol arrives to find the storage area--an old mine--surprisingly deserted. They plant the explosives, but just before they blow it, Dietrich (who has laid this all out as a trap) turns up. Shots are exchanged, and Dietrich and Troy are trapped inside. Meantime, outside the mine, assuming that the cave-in killed Troy, Moffitt and the Patrol prepare to finish blowing it up. Working together, Troy and Dietrich escape through a back entrance moments before the dump blows.