Geography and Sherman's Memory

"Sherman was a prodigy of geography. During the Civil War, no matter how befuddling the swamp or forest or mountain range, if Sherman had been there, he remembered it exactly. And since he had seen so much of the South, he became a kind of human geo-location system. It was an awesome military talent, but at the time he was developing it, it was nearly invisible to those around him. It may not have even struck Sherman as that unusual; it was simply something he did and assumed others shared" (Robert L. O'Connell, Fierce Patriot: The Tangled Lives of William Tecumseh Sherman, 26).