Palmer's division, which was already fiercely engaged, was now in the greatest peril, as Negley's retirement left an unprotected flank. On the right Cruft's brigade was almost surrounded while repulsing a frontal attack; but Grose's brigade, held in reserve, changed front to the rear and cleared a way. Hazen, at the apex of what was known as the "Round Forest," met repeated heavy attacks, but, owing to superior position and artillery support, was able to hold his own, though losing heavily. As Palmer retired, his division established connection with the right and faced the enemy with renewed confidence.
The grand wheel had now traversed the full quarter of a circle. It had been carried out with remarkable consistency and with remarkable speed and power. Every command in Bragg's army, with the exception of his reserve, had felt the impulse of the great maneuver, had taken a place therein, in regular order, and, at first glance, it would have seemed with complete success. For the entire Union army, with the exception of a small part of the left wing, had been forced from position. Its battle-front, instead of facing squarely east, now faced south, and its curving line was in place behind the Nashville Pike,--its only avenue of safety,--which in some instances was in plain sight of the enemy and within reach of his artillery and musketry. But though Rosecrans had lost heavily in men, guns, horses, and ammunition, Bragg had not escaped without cost. Some of his splendid brigades mustered but half of the strength with which they had begun the battle, and almost all the men were so exhausted as to be unable to go further. Moreover, they faced an army of men,--men who disliked being beaten, who occupied an elevated position of great strength, who had secured fresh stores of ammunition, who, acutely conscious of their danger, were resolved not to yield further, and who actually, here and there, showed a disposition to make reprisals upon their valiant foe.
But Bragg had not entirely exhausted his resources. The Union left lay temptingly near him, and, if he could crush or turn it, the rest of Rosecrans's army might still be his. Fresh troops were needed for such an attempt, but the five brigades of Breckinridge's division were at hand and they were summoned for the final effort. Breckenridge had been asked for reënforcements early in the day, but he had seen Van Cleve's big division start in his direction, and, apparently, had not seen it return when it was sent flying to arrest the rout of McCook's corps. He had also been ordered to meet some reënforcements, which Bragg had thought were coming to Rosecrans, but which did not appear; and consequently, had kept his division intact. Now he detached the brigades of Adams and Jackson, which, dashing through the river, threw themselves impetuously upon the Union forces in the "Round Forest." Upon Hazen's sorely-tried troops the brunt of the assault fell, but, using the railroad embankment as a protection, they managed to hold on. Soon Adams and Jackson turned back, shattered beyond further use.