...and all the approaches to it. General Pleasonton, of the Federal cavalry, had learned the ground by the reconnoissance of the day before, and to him was intrusted the posting of the advance troops of Reno 's corps on the south side of the pike. He says: I directed Scammon's brigade to move up the mountain on the left-hand road, gain the crest, and then move to the right, to the turnpike in the e...