The termination of the war and the fate of the Union hung in the balance in May of 1864 as Robert E. Lee's Army of Northern Virginia and Ulysses S. Grant's Army of the Potomac clashed in the Virginia countryside--first in the battle of the Wilderness, where the Federal army sustained greater losses than at Chancellorsville, and then further south in the vicinity of Spotsylvania Courthouse, where Grant sought to cut Lee's troops off from the Confederate...