Sherman ordered Corse's brigade, with a detachment from Joseph A.J. Lightburn's brigade, to attack along the narrow length of Tunnel Hill. Col. John M. Loomis's brigade, supported by Buschbeck, would move across the open fields on the west of the ridge while Brig. Gen. Giles Alexander Smith's brigade would move through the valley on the east side of the ridge. The brigades of Brig. Gen. Charles L. Matthies and Col. Green Berry Raum were held in reserve to follow up any successful attack; the brigades of Cols. Joseph R. Cockerill and Jesse I. Alexander would hold the heights seized the day before.