...from which Gen. Stevens's division had retreated, thereby leaving a gap. As Gen. Kearney had previously understood from Gen. Reno (the latter himself so believing) that the gap left by the retreat of Gen. Stevens had been filled, as well as believing it impossible that anybody could be driven from so strong a position he at once started off at a full gallop, unaccompanied by either aid or orderly, (they had b...