Torbert's division then crossed the river, followed by Gregg's cavalry division and a division of Union infantry. Lee knew that his best defensive position against Grant would be the low ridge on the southern bank of Totopotomoy Creek, but he was not certain of Grant's specific plans. If Grant was not intending to cross the Pamunkey in force at Hanovertown, the Union army could outflank him and head directly to Richmond. Lee ordered cavalry under Maj. Gen. Wade Hampton to make a reconnaissance in force, break through the Union cavalry screen, and find the Union infantry. Haw's Shop (May 28) At 8 a.m. on May 28, Hampton rode off from Atlee's Station. As more of Grant's infantry crossed the pontoon bridge over the Pamunkey, Brig. Gen. David McM. Gregg led his cavalry division probing west from Hanovertown, searching for Lee, while Brig. Gen. Alfred T. A. Torbert's division began to picket along Crump's Creek in the direction of Hanover Court House. Three miles west of Hanovertown, and a mile beyond a large blacksmith shop called Haw's Shop, Gregg's troopers ran into Hampton at Enon Church, finding the Confederate cavalrymen dismounted in a wooded area, hurriedly erecting breastworks made of logs and rails, and well covered by artillery. Brig. Gen. Henry E. Davies, Jr., deployed pickets from the 10th New York Cavalry to Hampton's front, but they were driven back. The Confederates deployed in line in shallow rifle pits faced with log and fence-rail breastworks. Before Hampton could attack the approaching Union cavalry, Col. J. Irvin Gregg's brigade arrived and moved to the right of Davies's men, extending his flank. A Confederate mounted charge, followed by dismounted troopers, was repulsed. Hampton fed in the green troops of the 4th South Carolina on his right and they met Davies's next charge with their longer range Enfield rifles, killing or wounding 256 men. Union return fire was heavy as well, because the troopers were armed with seven-shot Spencer repeating carbines. As Davies's first attack ground to a halt and the attack of Irvin Gregg's brigade failed to dislodge the Confederates, David Gregg sent for reinforcements from Sheridan, who released two brigades from Torbert's division. Torbert's reserve brigade under Brig. Gen. Wesley Merritt extended Gregg's line to the right, thwarting a flanking maneuver attempted by Hampton with Chambliss's newly arrived brigade. There was plenty of infantry nearby that could have been called for reinforcements,