Once inside the fort, the Union attackers became disorganized. All three of Stannard's brigade commanders were wounded or killed. A supporting column under Brig. Gen. Charles A. Heckman veered far off to the north and was repulsed. Ord personally attempted to rally the troops to exploit their success, but he too fell with a critical wound. The loss of commanders and the presence of Confederate ironclads on the James put an end to the XVIII Corps' drive on Chaffin's Bluff along the James River.