Siege at Red River is a 1954 American Western film directed by Rudolph Mate and starring Van Johnson, Joanne Dru, and Richard Boone. The film tells the story of Captain James S. Simmons, a Confederate soldier in the Civil War that steals a shipment of Gatling guns from the Northern army. In order to get the guns past enemy lines, Simmons poses as a traveling medicine man. Brett Manning (Boone), however, finds the guns and steals them in hopes of selling them to the Native Americans. Simmons then convinces the Union army that he was actually bringing the guns to them and then convinces them to go on a hunt for Manning. When the Yankees find Manning, they then discover the truth about Simmons and threaten to kill him. A Northern woman that has fallen in love with him might possibly save Simmons' life, however.