Anderson's attack was poorly coordinated and driven back by the heavy firepower of the Union cavalry's Spencer repeating carbines. By 9 a.m. Wright's lead elements arrived at the crossroads, but Wright decided to delay Grant's intended attack until after Smith arrived, which occurred in the afternoon, and the XVIII Corps men began to entrench on the right of the VI Corps. At 6:30 p.m. the attack that Grant had ordered for the morning finally began. Both Wright's and Smith's corps moved forward. Wright's men made little progress south of the Mechanicsville Road, recoiling from heavy fire. North of the road, Brig. Gen. Emory Upton's brigade also met with heavy fire from Brig. Gen. Thomas L. Clingman's brigade and fell back to its starting point. To Upton's right, the brigade of Col. William S. Truex found a gap in the Confederate line through a swampy, brush-filled ravine. As Truex's men charged through the gap, Clingman swung two regiments around to face them, and Anderson sent in Brig. Gen. Eppa Hunton's brigade from his corps reserve. Truex became surrounded on three sides and was forced to withdraw.