In combination with movements against the Boydton Plank Road at Petersburg, Maj. Gen. Benjamin Butler attacked the Richmond defenses along Darbytown Road with the X Corps. The XVIII Corps marched north to Fair Oaks where it was soundly repulsed by Maj. Gen. Charles W. Field's Confederate division. Confederate forces counterattacked, taking some 600 prisoners. The Richmond defenses remained intact. Of Lt. Gen. Ulysses S. Grant's offensives north of the James River, this was repulsed most easily. Union casualties were 1,603, Confederates fewer than 100.