...ering Gregg to come forward to Torbert's support with such troops as he could spare from the duty with which he had been charged. Torbert moved out promptly, Merritt's brigade first, followed by Custer 's, on the direct road to Cold Harbor, while Devin's brigade was detached, and marched by a left-hand road that would bring him in on the right and rear of the enemy's line, which was posted in front ...