On the 11th a strong division arrived from the Department of the Missouri under General Herron, which was placed on our left. This cut off the last possible chance of communication between Pemberton and Johnston, as it enabled Lauman to close up on McClernand's left while Herron intrenched from Lauman to the water's edge. At this point the water recedes a few hundred yards from the high land. Through this opening no doubt the Confederate commanders had been able to get messengers under cover of night.
On the 14th General Parke arrived with two divisions of Burnside's corps, and was immediately dispatched to Haines' Bluff. These latter troops—Herron's and Parke's—were the reinforcements already spoken of sent by Halleck in anticipation of their being needed. They arrived none too soon.
I now had about seventy-one thousand men. More than half were disposed across the peninsula, between the Yazoo at Haines' Bluff and the Big Black, with the division of Osterhaus watching the crossings of the latter river farther south and west from the crossing of the Jackson road to Baldwin's ferry and below.
There were eight roads leading into Vicksburg, along which and their immediate sides, our work was specially pushed and batteries advanced; but no commanding point within range of the enemy was neglected.
On the 17th I received a letter from General Sherman and one on the 18th from General McPherson, saying that their respective commands had complained to them of a fulsome, congratulatory order published by General McClernand to the 13th corps, which did great injustice to the other troops engaged in the campaign. This order had been sent North and published, and now papers containing it had reached our camps. The order had not been heard of by me, and certainly not by troops outside of McClernand's command until brought in this way. I at once wrote to McClernand, directing him to send me a copy of this order. He did so, and I at once relieved him from the command of the 13th army corps and ordered him back to Springfield, Illinois. The publication of his order in the press was in violation of War Department orders and also of mine.
CHAPTER XXXVIII.
JOHNSTON'S MOVEMENTS—FORTIFICATIONS AT HAINES' BLUFF—EXPLOSION OF THE MINE—EXPLOSION OF THE SECOND MINE—PREPARING FOR THE ASSAULT—THE FLAG OF TRUCE—MEETING WITH PEMBERTON—NEGOTIATIONS FOR SURRENDER—ACCEPTING THE TERMS—SURRENDER OF VICKSBURG.
On the 22d of June positive information was received that Johnston had crossed the Big Black River for the purpose of attacking our rear, to raise the siege and release Pemberton. The correspondence between Johnston and Pemberton shows that all expectation of holding Vicksburg had by this time passed from Johnston's mind. I immediately ordered Sherman to the command of all the forces from Haines' Bluff to the Big Black River. This amounted now to quite half the troops about Vicksburg. Besides these, Herron and A. J. Smith's divisions were ordered to hold themselves in readiness to reinforce Sherman. Haines' Bluff had been strongly fortified on the land side, and on all commanding points from there to the Big Black at the railroad crossing batteries had been constructed. The work of connecting by rifle-pits where this was not already done, was an easy task for the troops that were to defend them.
We were now looking west, besieging Pemberton, while we were also looking east to defend ourselves against an expected siege by Johnston. But as against the garrison of Vicksburg we were as substantially protected as they were against us. Where we were looking east and north we were strongly fortified, and on the defensive. Johnston evidently took in the situation and wisely, I think, abstained from making an assault on us because it would simply have inflicted loss on both sides without accomplishing any result. We were strong enough to have taken the offensive against him; but I did not feel disposed to take any risk of losing our hold upon Pemberton's army, while I would have rejoiced at the opportunity of defending ourselves against an attack by Johnston.
From the 23d of May the work of fortifying and pushing forward our position nearer to the enemy had been steadily progressing. At three points on the Jackson road, in front of Leggett's brigade, a sap was run up to the enemy's parapet, and by the 25th of June we had it undermined and the mine charged. The enemy had countermined, but did not succeed in reaching our mine. At this particular point the hill on which the rebel work stands rises abruptly. Our sap ran close up to the outside of the enemy's parapet. In fact this parapet was also our protection. The soldiers of the two sides occasionally conversed pleasantly across this barrier; sometimes they exchanged the hard bread of the Union soldiers for the tobacco of the Confederates; at other times the enemy threw over hand-grenades, and often our men, catching them in their hands, returned them.