The British 8th Army sends their desert expert -- Jack Moffitt -- to the Rat Patrol for one very special mission. But Sergeant Troy (the American head of the unit) is very uneasy about this new addition. Moffitt tells Troy that the Germans have buried ammunition and petrol at an abandoned oasis which only the Afrika Korps knows about. It's up to the Rat Patrol to find this oasis and destroy the cache before the Germans can reach it. Dietrich -- familiar with the Rat Patrol's tricks -- devises a trap wherein he will follow the Patrol to the oasis. The Rat Patrol gets delayed, though, by a broken axle and, in the end, it is a race between them and Dietrich to see who will reach the supplies first.