Kill Them All and Come Back Alone (1968)

Set against the backdrop of the American Civil War, Clyde McKay, a Confederate prisoner, devises a daring plan to seize a box of gold from a Union prison camp. Enlisting the help of fellow inmates and a sympathetic guard, he embarks on a perilous mission. However, betrayal lurks around every corner as alliances shift, leading to unexpected twists that threaten not just the heist but his very survival. As trust erodes, McKay must navigate treachery to secure the fortune and his freedom.