Each of course massed his forces at the point where he purposed to make his first assault, and each thus weakened his line at the point which his enemy was planning to assail.
As a consequence the initiatory advantage must of necessity lie with the force that should succeed in making itself the first aggressor, bringing on the battle before the other was ready and striking the other's weakest wing with his own strongest divisions.
That advantage fell to Bragg as a reward for his alertness in striking as soon as possible after dawn on the last day of the year. He had so extended his left as completely to overlap Rosecrans's right and he fell upon it in flank with resistless impetuosity. The force defending it was quickly crushed and the Confederates, advancing with enthusiasm, bent back the next division encountered, and after some strenuous fighting, forced it to retire upon a new line which Rosecrans had hastily established at right angles to that of the morning.
The fighting continued with desperate determination and great slaughter on both sides until nightfall. The advantage was conspicuously with the Confederates, though there was no decisive victory won. Rosecrans had held his position indeed, upon a part of his line, and had not been either destroyed or forced into retreat. But the Confederates had driven him from one half or more of the ground that he had held at the beginning of the battle, had captured twenty-eight of his guns and large numbers of prisoners, while their cavalry had marched entirely around him and fallen upon his communications in a way that very seriously threatened him with an isolation that must have involved his destruction.
Rosecrans had been badly worsted in battle, but he was not yet beaten. His army was not demoralized, and his own determination was not impaired. He took account of his ammunition, sent detachments to protect his communications, and resolved to hold his position and renew the battle on the following day, either as the assailant of his enemy or as the assaulted, as circumstances might determine.
But the next day was passed in inaction on both sides, and it was not until the second of January, 1863, that the battle was renewed. Even then it was renewed only in part and obviously with no disposition on either side to bring on a general engagement. Nevertheless there was very bloody fighting on the part of the detachments engaged, in which the Confederate general, Breckinridge, becoming involved and being subjected to a concentrated artillery fire at short range, lost nearly two thousand men.
Two days later and after desultory fighting, General Bragg abandoned his position at Murfreesboro and retired to Duck river, where he fortified. He reported his losses in this battle—which is variously known as Murfreesboro, and Stone river—at 10,000 men, and declared that he had taken 6,000 prisoners. He had also captured thirty guns and lost three. On the other hand, General Rosecrans reported a loss of 8,778 in killed and wounded, and about 2,800 in prisoners lost to the enemy—a total of somewhat less than 11,000. The two reports are hopelessly at variance and irreconcilable, as to the number of prisoners taken, as was usually the case with the reports of battle losses at that period of the war. They were usually inaccurate and never trustworthy, as every historian who has honestly tried to find out the truth has learned to his annoyance.
But whatever the exact losses were on either side, they were far greater than were those of many more famous battles, and about as great as those of the battles commonly accounted as of superior proportions. Thus the loss admitted by the Confederates at Murfreesboro out of a force of about 35,000 or 40,000 men, was nearly twice that which Lee, with a force of 68,000, suffered at Fredericksburg; while the admitted Federal loss at Murfreesboro, where the army numbered 43,700 men, was very nearly as great as that sustained by Burnside's army of 120,000 at Fredericksburg, including the fearful slaughter in the six terrible assaults upon Marye's Heights.
Obviously the battle of Murfreesboro must be accounted one of the bloodiest struggles of the war, as well as one of the most heroically contested on both sides. Its indecisiveness has been very interestingly summed up by General Van Horne in his "History of the Army of the Cumberland" as follows:
Neither army commander had fully executed his plan of battle, although General Bragg had approached very nearly the completion of his. He had turned a flank of the National army, bent back the right to the rear of the center, but had failed to turn its left or reach its rear, and hence had not gained the extreme advantages which he had anticipated in assuming the offensive and [which he] had seemingly attained at the grand crisis of the battle. He had assaulted boldly and persistently from first to last, but had completely exhausted his army without gaining a decisive victory. General Rosecrans had fought a battle radically different from the one he had proposed for himself. Instead of turning the right of the Confederate army and taking its center in reverse, according to his plan, he had been forced into the most emphatic straits in maintaining the defensive from flank to flank. Both commanders had lost heavily; General Bragg by continuous assaults with massed forces, and General Rosecrans by resistance at each point to superior numbers, and by frequent recessions under the guns of the enemy.... A battle whose emergencies of offense and defense involves the use of all reserves, must necessarily be a bloody one.
It is seldom that an engagement of such dimensions has left two commanding generals so much in doubt as to the course that either would adopt, and hence each determined to await developments, and each was ignorant of the purpose of the other. Of the two General Bragg was the more hopeful.