Sarepta Revis was a 17-year-old newlywed when her husband left their North Carolina home to fight in the Confederate States Army. Neither had much schooling, and writing did not come easily to them. Still, they exchanged letters with some regularity, telling each other how they were doing, expressing their love and longing. Once, after Daniel had been away for more than six months, Sarepta told him in a letter that she was “as fat as a pig.” This may not …