Flushed with victory, the Confederates now concentrated their attack upon Thomas, who thus far, on Horseshoe Ridge and its spurs, had repelled all attempts to dislodge him. The Confederates, with victory within their grasp, and led by the indomitable Longstreet, swarmed up the slopes in great numbers, but they were hurled back with fearful slaughter. Thomas was looking anxiously for Sheridan, whom, as he knew, Rosecrans had ordered with two brigades to his support. But in Longstreet's rout of the right wing Sheridan, with the rest, had been carried on toward Chattanooga, and he found himself completely cut off from Thomas, as the Confederates were moving parallel to him. Yet the indomitable Sheridan, in spite of his terrible experience of the morning, did not give up the attempt. Foiled in his efforts to get through McFarland's Gap, he moved quickly on Rossville and came down the Lafayette road toward Thomas' left flank. Meanwhile, advised by the incessant roar of musketry, General Gordon Granger, in command of the reserve corps near Rossville, advanced rapidly with his fresh troops. Acting with promptness and alacrity under orders, Granger sent Steedman to Thomas' right. Directly across the line of Thomas' right was a ridge, on which Longstreet stationed Hindman with a large command, ready for an attack on Thomas' flank--a further and terrible menace to the nearly exhausted general, but it was not all. In the ridge was a small gap, and through this Kershaw was pouring his division, intent on getting to Thomas' rear. Rosecrans thus describes the help afforded to Thomas: "Steedman, taking a regimental color, led the column. Swift was the charge and terrible the conflict, but the enemy was broken." The fighting grew fiercer, and at intervals was almost hand to hand. The casualties among the officers, who frequently led their troops in person, were mounting higher and higher as the moments passed. All the afternoon the assaults continued, but the Union forces stood their ground. Ammunition ran dangerously low, but Steedman had brought a small supply, and when this was distributed each man had about ten rounds. Finally, as the sun was setting in the west, the Confederate troops advanced in a mighty concourse. The combined forces of Kershaw, Law, Preston, and Hindman once more rushed forward, gained possession of their lost ridge at several points, but were unable to drive their attack home. In many places the Union lines stood firm and both sides rested in the positions taken. The plucky Thomas was saved. The onslaught on the Federal left of the battlefield was one of the heaviest attacks made on a single point during the war.