Lieutenant Klinger, a wounded Luftwaffe ace, is the only German who can identify the location of the Allied troops preparing to invade Sicily. The Rat Patrol captures him, and then Moffitt takes his place to convince the Germans to watch the wrong place for the upcoming attack. Troy, meanwhile, infiltrates the military hospital. Gestapo Major Bruder, however, suspects Moffitt and exposes him, but by the time he does, Moffitt manages to get Bruder killed in his place and escape.

A young French Resistance fighter named Michele survives the Patrol's quick assault on a small German convoy. She explains Germans captured her during her group's attempt to stop the convoy carrying radar equipment. However, Michele is a double agent and will deliver the Patrol to her lover, German Colonel Leske. She convinces the Patrol to accompany her on a raid to destroy a German radar base. Leske captures the Rat Patrol, but he gets killed, saving Michele during their escape while blowing up the radar base.