...ry having been upon picket during the night, were left as rear-guard, and company A, of the Fiftieth infantry, under Lieut. Indy, was thrown forward as an advance-guard. As the advance approached Parker's Cross-Roads , it was attacked by the enemy's pickets, and immediately deployed as skirmishers, and pushed rapidly forward up the hill, the whole column following. As I got with the advance to the top of the hil...