It was on the twenty-ninth of December, 1862, that Sherman made his desperate attack. One brigade, by determined fighting, reached the foot of the bluffs but was instantly hurled back again, leaving five hundred of its men stark and stiff on the battlefield. At another point a regiment of daring fellows reached the base of the headland and found it impossible either to go forward or to retreat without inviting destruction. The men dug rat holes for themselves at the base of the bluffs, and did what they could in the way of self-protection, while the Confederates on the cliffs above kept up a murderous vertical fire upon them throughout the day, until nightfall mercifully came and brought with it an opportunity for the Federals to retire. In this struggle Sherman lost nearly two thousand men, while the Confederate loss was less than two hundred--one man killed on the one side to ten laid low on the other. Sherman was a man not easily daunted. He was not yet ready to abandon his plan, to admit himself defeated or even to suspend his preternatural activity. He instantly decided upon still further assaults at other points. He arranged that the transports should carry the bulk of his army further up the river to Haines's Bluff during the night with the purpose of taking the Confederate works there by assault from the rear. There came a great fog so that the transports could not find their way, and so this plan miscarried. By this time Sherman discovered that great bodies of Confederates were being hurried into the defensive works surrounding Vicksburg. He had previously heard nothing whatever from Grant, and it was only in this way that he learned that Grant had somehow failed to hold Pemberton in check, and that he, therefore, had in front of him the greater part of the Confederate army instead of the little garrison which he had set out to encounter and overcome. Sherman was a man of wits and promptitude. He wasted no time in speculation, but at once reëmbarked his troops and returned to the mouth of the Yazoo, thus abandoning as a failure the campaign which he had undertaken in full confidence that it would be crowned with distinguished success. He did not abandon the hope of ultimately reducing the Vicksburg stronghold, but for the time being he knew not how to go on with that enterprise with any tolerable prospect of success. He sat still, therefore, for a day or two, until on the fourth of January, 1863, General McClernand was placed in command of the forces which Sherman had previously controlled. Many little actions followed, most of them directed to the purpose of breaking up small tributary Confederate posts and fortresses on the Arkansas river and elsewhere in the neighborhood. In these little operations the Federals were in the main successful, but as yet they had achieved nothing that seriously threatened the integrity of the Confederate position at Vicksburg, and that alone was the real object of their persistent endeavors.