...hile one division of cavalry was in my rear and two in my front, and on the left was the Blue Ridge. I had therefore to move with great circumspection. Wickham's brigade of cavalry was sent up South River , near the mountain, to get between the enemy and Rock-fish Gap, while the infantry moved in two columns, one up South River, with the trains guarded in front by Pegram's and Wharton's divisions, and ...