On the 23d I removed my headquarters back to Holly Springs. The troops were drawn back gradually, but without haste or confusion, finding supplies abundant and no enemy following. The road was not damaged south of Holly Springs by Van Dorn, at least not to an extent to cause any delay. As I had resolved to move headquarters to Memphis, and to repair the road to that point, I remained at Holly Springs until this work was completed.

On the 10th of January, the work on the road from Holly Springs to Grand Junction and thence to Memphis being completed, I moved my headquarters to the latter place. During the campaign here described, the losses (mostly captures) were about equal, crediting the rebels with their Holly Springs capture, which they could not hold.

When Sherman started on his expedition down the river he had 20,000 men, taken from Memphis, and was reinforced by 12,000 more at Helena, Arkansas. The troops on the west bank of the river had previously been assigned to my command. McClernand having received the orders for his assignment reached the mouth of the Yazoo on the 2d of January, and immediately assumed command of all the troops with Sherman, being a part of his own corps, the 13th, and all of Sherman's, the 15th. Sherman, and Admiral Porter with the fleet, had withdrawn from the Yazoo. After consultation they decided that neither the army nor navy could render service to the cause where they were, and learning that I had withdrawn from the interior of Mississippi, they determined to return to the Arkansas River and to attack Arkansas Post, about fifty miles up that stream and garrisoned by about five or six thousand men. Sherman had learned of the existence of this force through a man who had been captured by the enemy with a steamer loaded with ammunition and other supplies intended for his command. The man had made his escape. McClernand approved this move reluctantly, as Sherman says. No obstacle was encountered until the gunboats and transports were within range of the fort. After three days' bombardment by the navy an assault was made by the troops and marines, resulting in the capture of the place, and in taking 5,000 prisoners and 17 guns. I was at first disposed to disapprove of this move as an unnecessary side movement having no especial bearing upon the work before us; but when the result was understood I regarded it as very important. Five thousand Confederate troops left in the rear might have caused us much trouble and loss of property while navigating the Mississippi.

Immediately after the reduction of Arkansas Post and the capture of the garrison, McClernand returned with his entire force to Napoleon, at the mouth of the Arkansas River. From here I received messages from both Sherman and Admiral Porter, urging me to come and take command in person, and expressing their distrust of McClernand's ability and fitness for so important and intricate an expedition.

On the 17th I visited McClernand and his command at Napoleon. It was here made evident to me that both the army and navy were so distrustful of McClernand's fitness to command that, while they would do all they could to insure success, this distrust was an element of weakness. It would have been criminal to send troops under these circumstances into such danger. By this time I had received authority to relieve McClernand, or to assign any person else to the command of the river expedition, or to assume command in person. I felt great embarrassment about McClernand. He was the senior major-general after myself within the department. It would not do, with his rank and ambition, to assign a junior over him. Nothing was left, therefore, but to assume the command myself. I would have been glad to put Sherman in command, to give him an opportunity to accomplish what he had failed in the December before; but there seemed no other way out of the difficulty, for he was junior to McClernand. Sherman's failure needs no apology.

On the 20th I ordered General McClernand with the entire command, to Young's Point and Milliken's Bend, while I returned to Memphis to make all the necessary preparation for leaving the territory behind me secure. General Hurlbut with the 16th corps was left in command. The Memphis and Charleston railroad was held, while the Mississippi Central was given up. Columbus was the only point between Cairo and Memphis, on the river, left with a garrison. All the troops and guns from the posts on the abandoned railroad and river were sent to the front.

On the 29th of January I arrived at Young's Point and assumed command the following day. General McClernand took exception in a most characteristic way—for him. His correspondence with me on the subject was more in the nature of a reprimand than a protest. It was highly insubordinate, but I overlooked it, as I believed, for the good of the service. General McClernand was a politician of very considerable prominence in his State; he was a member of Congress when the secession war broke out; he belonged to that political party which furnished all the opposition there was to a vigorous prosecution of the war for saving the Union; there was no delay in his declaring himself for the Union at all hazards, and there was no uncertain sound in his declaration of where he stood in the contest before the country. He also gave up his seat in Congress to take the field in defence of the principles he had proclaimed.

The real work of the campaign and siege of Vicksburg now began. The problem was to secure a footing upon dry ground on the east side of the river from which the troops could operate against Vicksburg. The Mississippi River, from Cairo south, runs through a rich alluvial valley of many miles in width, bound on the east by land running from eighty up to two or more hundred feet above the river. On the west side the highest land, except in a few places, is but little above the highest water. Through this valley the river meanders in the most tortuous way, varying in direction to all points of the compass. At places it runs to the very foot of the bluffs. After leaving Memphis, there are no such highlands coming to the water's edge on the east shore until Vicksburg is reached.

The intervening land is cut up by bayous filled from the river in high water—many of them navigable for steamers. All of them would be, except for overhanging trees, narrowness and tortuous course, making it impossible to turn the bends with vessels of any considerable length. Marching across this country in the face of an enemy was impossible; navigating it proved equally impracticable. The strategical way according to the rule, therefore, would have been to go back to Memphis; establish that as a base of supplies; fortify it so that the storehouses could be held by a small garrison, and move from there along the line of railroad, repairing as we advanced, to the Yallabusha, or to Jackson, Mississippi. At this time the North had become very much discouraged. Many strong Union men believed that the war must prove a failure. The elections of 1862 had gone against the party which was for the prosecution of the war to save the Union if it took the last man and the last dollar. Voluntary enlistments had ceased throughout the greater part of the North, and the draft had been resorted to to fill up our ranks. It was my judgment at the time that to make a backward movement as long as that from Vicksburg to Memphis, would be interpreted, by many of those yet full of hope for the preservation of the Union, as a defeat, and that the draft would be resisted, desertions ensue and the power to capture and punish deserters lost. There was nothing left to be done but to go FORWARD TO A DECISIVE VICTORY. This was in my mind from the moment I took command in person at Young's Point.

The winter of 1862-3 was a noted one for continuous high water in the Mississippi and for heavy rains along the lower river. To get dry land, or rather land above the water, to encamp the troops upon, took many miles of river front. We had to occupy the levees and the ground immediately behind. This was so limited that one corps, the 17th, under General McPherson, was at Lake Providence, seventy miles above Vicksburg.