During separations enforced by the military, Lieutenant General George A. Custer and his wife, Elizabeth, corresponded about the Civil War, the perils of frontier life, and the chain of events that would lead to his tragic death at the Little Big Horn in Montana Territory. Their letters reveal the nuances of personal and political loyalties rarely expressed by historians and novelists. And they reveal a devotion rare among wartime marriages. He was her Autie, her Darling Boy, and she was his Libbie, his Darling Sunbeam.

When Elizabeth Custer died in 1933, after fifty-seven years of widowhood, she left behind these treasured letters. Her friend and literary executor, Marguerite Merington, edited them, adding related materials and a thread of narrative reaching from Custer's birth on an Ohio farm to the final fury at the Little Big Horn.