Towards evening the evacuation had become a certainty, so that Wagner crossed over and took unopposed possession the next morning.
This exhilarating fact was quickly made known to all parts of the army. Rumors from various sources of the rebel purpose to abandon Chattanooga had reached Rosecrans for several days before the actual evacuation. In order to test them, several bold reconnoissances were made by General Thomas along the crest of Lookout Mountain, and by General Crittenden down the Lookout Valley and around the northern slope of the Mountain. But Wagner's announcement of the occupation of the town was received by the General-in-chief before the reconnoissances confirmed the retirement of the rebels from it. General Bragg had acquired, by September 6, a sufficiently clear perception of the object of his adversary's movements to come to a decision regarding his own. He recognized the advance of our right upon his southern communications as a most threatening move, and prudently, though reluctantly, accepted the inevitable consequence of it, namely, that he could not allow Rosecrans to get between him and Rome, and that therefore his withdrawal from Chattanooga was necessary. Anticipating this as a possible contingency, he had ordered Buckner to join him. On September 6, he issued a circular order directing that the troops of his army should move immediately toward Rome in four columns. This general indication was followed only by marching directions from Chattanooga to Lafayette, a small town twenty-five miles a little east of south of Chattanooga, and the point of junction of the main roads thence and from Ringgold to the Coosa Valley and Rome. The corps of Polk and Hill were to march via Rossville; the commands of Buckner and Walker, with the supply trains, over a more easterly route. The troops were to carry six days' rations, and to include only “fighting men.”
The dramatic first words of the order (“In order to meet the enemy and strike him”) may have been intended to
