Generally regarded as the most important of the Civil War campaigns conducted in the Shenandoah Valley of Virginia, that of 1864 lasted more than four months and claimed more than 25,000 casualties. The armies of Philip H. Sheridan and Jubal A. Early contended for immense stakes. Beyond the agricultural bounty and the boost in morale a victory would bring, events in the Valley also would affect Abraham Lincoln's chances for reelection in the November...