 Filmed during World War II, this film was intended to be a propaganda piece for the U.S. government. Seargant Joe Gunn (Bogart) leads an abandoned tank unit after the fall of Tobruk in North Africa. The tanks picks up British, French, South African, and Sudanese soldiers along the way, becoming a microcosm of the Allied troops. The group works together to defeat a much larger German force that wants the same water well that they have. The film portrays all of the images that the U.S. deemed important for the American people see in regards to the war.