The anti-war story focuses on a bitter, strategic series of Civil War battles in the Shenandoah Valley between Union General George Armstrong Custer and Confederate Colonel John Singleton Mosby, known as the Gray Ghost for his stealth and elusiveness. His cavalrymen, known as Mosby's Rangers, continually outsmarted the much larger enemy forces in a sequence of raids, which enraged Custer and eventually created a fierce cycle of revenge between the two men.