...nt of Lookout Mountain was withdrawn. Bragg at once took possession, and sent Longstreet's corps over into Lookout Valley. He also extended his pickets down the south bank of the river, nearly to Bridgeport , our base of supplies. This cut us off from the river and the roads on its north and south banks, and left us but one open road to the rear. Over this, for a time, we might haul supplies; but we ...