The Union brigades fell slowly back, and recrossed the river, pursued to the very banks by the rebels, pouring in upon them a steady fire, and then immediately forming their line in the deserted position. The rebel artillery was moved, and from both sides of the stream a heavy fire was poured into each force by its opponents. There was still a Union reserve; for a wise purpose of his own, General Rosecrans had not yet permitted Negley’s men to be sent forward; but by the General’s order they were now ordered to come up, which they did, closely followed by General J. C. Davis’s division. With shouts of enthusiasm they pressed forward toward the aid of Beatty’s left; and having reached the banks of Lytle’s creek, they opened a furious and destructive fire upon the rebel force beyond. Two batteries were set to work, and a severe volley of grape and shrapnel poured in on the enemy’s line. The effect was perceived at once—they fell back slowly; and Davis’s division was ordered to cross the stream in pursuit. The Seventy eighth Pennsylvania sprang forward, plunged in, and were the first to cross, led by the gallant Colonel Sirwell. Immediately the Nineteenth Illinois and the rest of the two brigades followed, Davis also crossed, speedily followed by Beatty; and one of the most brilliant and desperate charges of the day was executed. Davis pressed through his ranks, and taking off his hat placed it on his sword, and with a loud hearty shout to his men to _Charge!_ led them himself to the top of the hill. The rebel line broke before the gallant charge, and fled in the greatest confusion. Negley perceiving the advantage gained by the troops across the stream, followed it up without an instant’s loss of time, by ordering his batteries to cross, which, together with a captured rebel battery were put to work, pouring death into the enemy’s retreating line. General Negley now sent word to General Rosecrans that he was driving the rebels before him, and that they were almost compelled to a complete and disgraceful rout. “Drive ’em!” was the enthusiastic response of the Union General; and he immediately ordered the whole of the National line to be advanced; and on the instant after one sheet of flame burst from right to left along the entire front, and the shouts of victory rose high above every other sound. The rebel resistance was desperate, but useless; and Polk’s entire division fled before Negley, who never slackened in pursuit till the enemy was driven far beyond their outer works, when the coming on of night saved them from utter destruction. General Negley now ordered a halt, and sent a dispatch to General Rosecrans that darkness had overtaken him within three-quarters of a mile of Murfreesboro’, but he would advance no further till he had received orders from the General in command. [Illustration: BATTLE OF MURFREESBORO’, DEC. 31, 1862.] [Illustration: REBEL BATTERY CARRIED BY ASSAULT BY GENERAL ROUSSEAU’S COMMAND.]