Colonel Edwin A. Nash's troops of Brigadier General Philip Cook's Georgia Brigade held their ground east of the Jerusalem Plank Road, but Potter's soldiers widened it west of Jerusalem Plank Road by attacking Fort Mahone. The fort was placed on a slight ridge and filled with obstructions and sandbags. Union Colonel (Brevet Brigadier General) John I. Curtin's brigade assaulted the fort from the rear as well as across the ditch and over the parapet, capturing three guns and several prisoners. The four Union regiments in the fort could not expand their occupation of the Confederate works much farther west as they were subjected to artillery fire from the second Confederate line. By this time Potter had been severely wounded and was succeeded in command by Brigadier General Simon Griffin.