He was out of Tennessee.
I found General Grant at Ringgold, and, after some explanations as to breaking up the railroad from Ringgold back to the State line, as soon as some cars loaded with wounded men could be pushed back to Chickamauga depot, I was ordered to move slowly and leisurely back to Chattanooga.
On the following day the Fifteenth Corps destroyed absolutely and effectually the railroad from a point half-way between Ringgold and Graysville, back to the State line; and General Grant, coming to Graysville, consented that, instead of returning direct to Chattanooga, I might send back all my artillery-wagons and impediments, and make a circuit by the north as far as the Hiawasaee River.
Accordingly, on the morning of November 29th, General Howard moved from Parker's Gap to Cleveland, General Davis by way of McDaniel's Gap, and General Blair with two divisions of the Fifteenth Corps by way of Julien's Gap, all meeting at Cleveland that night.

Here another good break was made in the Dalton & Cleveland road.

On the 30th the army moved to Charleston, General Howard approaching so rapidly that the enemy evacuated with haste, leaving the bridge but partially damaged, and five car-loads of flour and provisions on the north bank of the Hiawassee.
This was to have been the limit of our operations.

Officers and men had brought no baggage or provisions, and the weather was bitter cold.

I had already reached the town of Charleston, when General Wilson arrived with a letter from General Grant, at Chattanooga, informing me that the latest authentic accounts from Knoxville were to the 27th, at which time General Burnside was completely invested, and had provisions only to include the 3d of December; that General Granger had left Chattanooga for Knoxville, by the river-road, with a steamboat following him in the river; but he feared that General Granger could not reach Knoxville in time, and ordered me to take command of all troops moving for the relief of Knoxville, and hasten to General Burnside.