The battle of Gettysburg was undoubtedly one of the greatest conflicts of modern times, not only from the number of combatants engaged and the desperate nature of the struggle, but because on the now classic heights of Cemetery Ridge, Culp's Hill, and the Round Tops the future of the American Republic, for weal or for woe, was fought and won on those memorable July days. As decisive in its character and far-reaching results as the battle of Waterloo like it, it has been the subject of endless controversy and military criticism, and has brought forth a multitude of books, pamphlets, and...