Three Days in Hell (Historical Fiction) A Novel of the American Civil War For more than two months, Union General William Rosecrans and his Army of the Cumberland pursued General Braxton Bragg's Confederate Army of Tennessee from Murfreesboro to Chattanooga. Finally, on September 18, 1863, on the banks of a small river in Northwest Georgia, the two great armies came face to face, and so began three days of hell, including the two bloodiest days of...