A mere handful of battlefields have come to epitomize the anguish and pain of America's Civil War: Gettysburg, Shiloh, Chancellorsville, Chickamauga. Yet another name belongs on that infamous list: Stones River, the setting for Peter Cozzens's No Better Place to Die.   It was here that both the Union and Confederate armies lost over one-quarter of their forces in battle casualties. The Confederacy's defeat at Stones River unleashed a wave of dissension that crippled the army's high command and ultimately closed Tennessee to the South for two years. The loss deterred the British and French from coming to the aid of the South in the Civil War, with tragic effects for the Southern cause.   In the 126 years since the guns fell silent at Stones River, few books have examined the bloody clash and its impact on the war's subsequent outcome. No Better Place to Die recounts the events and strategies that brought the two armies to the banks of this central Tennessee river on December 31, 1862.