In recent years, the American experience in Iraq and Afghanistan has encouraged military historians to revisit the American Civil War. It too was a war of occupation, insurgency, and counterinsurgency, and for every Gettysburg there were a thousand instances of bushwhacking and other forms of guerrilla violence. Until now, that guerrilla war lay in the shadows as historians focused on its chaos and brutality. Of Methods and Madness lifts the veil from our eyes, using digital maps to reveal order beneath guerrillas seeming anarchy in the hope that we may better understand war in all its hellish forms, whether it took place in the trenches at Petersburg, the beaches at Normandy, the jungles of Vietnam, or the mountains of Afghanistan.