Road. Brigadier General (Brevet Major General) John F. Hartranft's division was to the east on the right of Fort Sedgwick. Brigadier General (Brevet Major General) Orlando B. Willcox sent three regiments from his division to cover Hartranft's right flank with the rest of his regiments in reserve but demonstrating between the Crater and the Appomattox River. Potter and Hartranft both put axmen in front of their forces to dismantle obstructions. Parke's attackers moved forward into a mist at about 4:00 a.m. Thomas P. Beals, with three companies of the 31st Maine Infantry Regiment, led the attack of Potter's division on Battery No. 28 after the pioneers chopped through the chevaux-de-frise. The ditch in front of the battery was filled with water so after some Union attackers fell in, others moved around the west side of the battery and captured its small garrison. Taking artillery fire from the secondary Confederate line, the Union troops then moved along the main line toward Fort Mahone. Hartranft's division had similar success taking Battery No. 27. Harriman's three regiments from Willcox's division took five guns and 68 prisoners at Battery No. 25. The Union attackers captured Miller's salient but then had to fight from traverse to traverse along the trenches. Cornelius Robinson Jr. led the 3rd Regiment Alabama Infantry to the right when Hartranft's and Harriman's men got to the line, positioning them so that the Union attackers could be enfiladed by artillery fire from the second Confederate line. Robinson's men shot the attackers as they emerged from the traverse to their east until the Confederates had to retreat after running out of ammunition. 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. The Confederates