...ps, then guarding Ashby's Gap, was ordered down to Manassas Gap. The order was received late in the day, and by four o'clock the corps was in motion. By an almost unprecedented march they reached Piedmont before dark, when, without halting, the First division, (Birney's command,) temporarily commanded by General Ward, was thrown forward to support General Buford, who was found to be ten miles in advan...