William Tecumseh Sherman has been called the first modern general. According to military historian B. H. Liddell Hart, he understood before his contemporaries that wars and battles would be won 'more by the movement of troops than by fighting.' Also modern is his unsentimental view of combat, epitomized by his famous remark that 'War is hell.' And he was an able enough historian to realize that the Civil War-and indeed all future wars-would be unlike...