Immortal Sergeant (1943) NTSC DVD5

In North Africa, experienced Sergeant Kelly (Thomas Mitchell) leads a British patrol, accompanied by Corporal Colin Spence (Henry Fonda), an unassertive Canadian. When they are attacked by Italian airplanes, they manage to shoot one down, but it crashes on one of their vehicles, killing eight men. Later, Kelly leads the six survivors on an attack of an Italian armored car but is seriously wounded. He orders Spence to leave him behind; when Spence refuses to obey, he shoots himself. Spence leads the remaining three men toward an oasis. Before they can reach it, though, a transport plane lands and disgorges German soldiers who set up a base. After sneaking in to steal badly needed food and water, Spence has to assert his leadership when one of his men advocates surrendering. Instead, Spence leads them in a surprise attack under the cover of a sandstorm. The British emerge victorious, though one man is killed and Spence is wounded. The corporal comes to in a Cairo hospital and finds he is to be given a medal and promoted to lieutenant. His newfound assertiveness extends to his personal life. He proposes to his girlfriend Valentine (Maureen O'Hara), who he had thought of (in flashbacks) throughout his ordeal.