W. Tucker, as they rode through woods parallel to the Boydton Plank Road trying to reach Major General Henry Heth's headquarters near the front line. Hill demanded their surrender, but the Union soldiers took aim, fired and killed him. Tucker escaped and rode back to Lee to report Hill's death. VI Corps, XXIV Corps moves Major General John Gibbon's XXIV Corps of the Army of the James was unable to extend the breakthrough by assaulting the main Confederate line southeast across the Boydton Plank Road, to the left of the VI Corps, because the ground was too broken and marshy to cross so Major General Edward C. Ord sent all of Brigadier General Robert S. Foster's division and most of two brigades from Brigadier General John W. Turner's division of the XXIV Corps to follow Wright's corps. Brigadier General Thomas M. Harris's brigade of Turner's division captured a section of the Confederate line southwest of Wright's breakthrough after the defenders had evacuated. After the breakthrough, Wright and his officers brought some order to seven brigades and turned this large part of his corps to the left to deal with the troops of Major General Henry Heth's division still holding the Confederate line to the southwest with about 1,600 men. The VI Corps attackers rolled past Confederate Brigadier General William McComb's brigade and captured Confederate Fort Davis, lost it to McComb's counterattack about 20 minutes later and then recaptured it a short time later. By 7:45 a.m., Heth and the remaining men of his division, with only Brigadier General John R. Cooke's brigade mostly intact, were withdrawing toward Sutherland's Station. The XXIV Corps had followed the VI Corps' advance and by 9:00 a.m., Wright met Ord and Gibbon in the Confederate works. They decided that since the Confederate defense had collapsed in this area, they would turn their combined force toward the city. By about 10:00 a.m., Ord and Wright were moving 15,000 men in a line facing northeast, with Ord on the right and Wright on the left as they advanced on the city with the idea of attempting to break the western defenses of Petersburg. Battle of Forts Gregg and Whitworth Confederates from Brigadier General William R. Cox's Brigade of Major General Bryan Grimes's Division of the Second Corps held the Confederate line to the east of the broken Confederate main line. When Brigadier General Lane withdrew his remaining