Sherman thought Hood would follow him, though he proposed to prepare for the contingency of the latter moving the other way while he was moving south, by making Thomas strong enough to hold Tennessee and Kentucky. I, myself, was thoroughly satisfied that Hood would go north, as he did. On the 2d of November I telegraphed Sherman authorizing him definitely to move according to the plan he had proposed: that is, cutting loose from his base, giving up Atlanta and the railroad back to Chattanooga. To strengthen Thomas he sent Stanley (4th corps) back, and also ordered Schofield, commanding the Army of the Ohio, twelve thousand strong, to report to him. In addition to this, A. J. Smith, who, with two divisions of Sherman's army, was in Missouri aiding Rosecrans in driving the enemy from that State, was under orders to return to Thomas and, under the most unfavorable circumstances, might be expected to arrive there long before Hood could reach Nashville.
In addition to this, the new levies of troops that were being raised in the North-west went to Thomas as rapidly as enrolled and equipped. Thomas, without any of these additions spoken of, had a garrison at Chattanooga which had been strengthened by one division and garrisons at Bridgeport, Stevenson, Decatur, Murfreesboro, and Florence. There were already with him in Nashville ten thousand soldiers in round numbers, and many thousands of employees in the quartermaster's and other departments who could be put in the intrench meets in front of Nashville, for its defence. Also, Wilson was there with ten thousand dismounted cavalrymen, who were being equipped for the field. Thomas had at this time about forty-five thousand men without any of the reinforcements here above enumerated. These reinforcements gave him altogether about seventy thousand men, without counting what might be added by the new levies already spoken of.
About this time Beauregard arrived upon the field, not to supersede Hood in command, but to take general charge over the entire district in which Hood and Sherman were, or might be, operating. He made the most frantic appeals to the citizens for assistance to be rendered in every way: by sending reinforcements, by destroying supplies on the line of march of the invaders, by destroying the bridges over which they would have to cross, and by, in every way, obstructing the roads to their front. But it was hard to convince the people of the propriety of destroying supplies which were so much needed by themselves, and each one hoped that his own possessions might escape.
Hood soon started north, and went into camp near Decatur, Alabama, where he remained until the 29th of October, but without making an attack on the garrison of that place.
The Tennessee River was patrolled by gunboats, from Muscle Shoals east; and, also, below the second shoals out to the Ohio River. These, with the troops that might be concentrated from the garrisons along the river at any point where Hood might choose to attempt to cross, made it impossible for him to cross the Tennessee at any place where it was navigable. But Muscle Shoals is not navigable, and below them again is another shoal which also obstructs navigation. Hood therefore moved down to a point nearly opposite Florence, Alabama, crossed over and remained there for some time, collecting supplies of food, forage and ammunition. All of these had to come from a considerable distance south, because the region in which he was then situated was mountainous, with small valleys which produced but little, and what they had produced had long since been exhausted. On the 1st of November I suggested to Sherman, and also asked his views thereon, the propriety of destroying Hood before he started on his campaign.
On the 2d of November, as stated, I approved definitely his making his proposed campaign through Georgia, leaving Hood behind to the tender mercy of Thomas and the troops in his command. Sherman fixed the 10th of November as the day of starting.
Sherman started on that day to get back to Atlanta, and on the 15th the real march to the sea commenced. The right wing, under Howard, and the cavalry went to Jonesboro, Milledgeville, then the capital of Georgia, being Sherman's objective or stopping place on the way to Savannah. The left wing moved to Stone Mountain, along roads much farther east than those taken by the right wing. Slocum was in command, and threatened Augusta as the point to which he was moving, but he was to turn off and meet the right wing at Milledgeville.
Atlanta was destroyed so far as to render it worthless for military purposes before starting, Sherman himself remaining over a day to superintend the work, and see that it was well done. Sherman's orders for this campaign were perfect. Before starting, he had sent back all sick, disabled and weak men, retaining nothing but the hardy, well-inured soldiers to accompany him on his long march in prospect. His artillery was reduced to sixty-five guns. The ammunition carried with them was two hundred rounds for musket and gun. Small rations were taken in a small wagon train, which was loaded to its capacity for rapid movement. The army was expected to live on the country, and to always keep the wagons full of forage and provisions against a possible delay of a few days.