The next day (July 4, 1863) Vicksburg surrendered, and orders were given for at once attacking General Johnston. The Thirteenth Corps (General Ord) was ordered to march rapidly, and cross the Big Black at the railroad-bridge; the Fifteenth by Mesainger's, and the Ninth (General Parker) by Birdsong's Ferry-all to converge on Bolton. My corps crossed the Big Black during the 5th and 6th of July, and marched for Bolton, where we came in with General Ord's troops; but the Ninth Corps was delayed in crossing at Birdsong's. Johnston had received timely notice of Pemberton's surrender, and was in full retreat for Jackson. On the 8th all our troops reached the neighborhood of Clinton, the weather fearfully hot, and water scarce. Johnston had marched rapidly, and in retreating had caused cattle, hogs, and sheep, to be driven into the ponds of water, and there shot down; so that we had to haul their dead and stinking carcasses out to use the water. On the 10th of July we had driven the rebel army into Jackson, where it turned at bay behind the intrenchments, which had been enlarged and strengthened since our former visit in May. We closed our lines about Jackson; my corps (Fifteenth) held the centre, extending from the Clinton to the Raymond road; Ord's (Thirteenth) on the right, reaching Pearl River below the town; and Parker's (Ninth) the left, above the town.
On the 11th we pressed close in, and shelled the town from every direction. One of Ords brigades (Lauman's) got too close, and was very roughly handled and driven back in disorder. General Ord accused the commander (General Lauman) of having disregarded his orders, and attributed to him personally the disaster and heavy loss of men. He requested his relief, which I granted, and General Lauman went to the rear, and never regained his division. He died after the war, in Iowa, much respected, as before that time he had been universally esteemed a most gallant and excellent officer. The weather was fearfully hot, but we continued to press the siege day and night, using our artillery pretty freely; and on the morning of July 17th the place was found evacuated. General Steele's division was sent in pursuit as far as Brandon (fourteen miles), but General Johnston had carried his army safely off, and pursuit in that hot weather would have been fatal to my command.
Reporting the fact to General Grant, he ordered me to return, to send General Parkes's corps to Haines's Bluff, General Ord's back to Vicksburg, and he consented that I should encamp my whole corps near the Big Black, pretty much on the same ground we had occupied before the movement, and with the prospect of a period of rest for the remainder of the summer. We reached our camps on the 27th of July.
Meantime, a division of troops, commanded by Brigadier-General W. Sooy Smith, had been added to my corps. General Smith applied for and received a sick-leave on the 20th of July; Brigadier-General Hugh Ewing was assigned to its command; and from that time it constituted the Fourth Division of the Fifteenth Army Corps.
Port Hudson had surrendered to General Banks on the 8th of July (a necessary consequence of the fall of Vicksburg), and thus terminated probably the most important enterprise of the civil war—the recovery of the complete control of the Mississippi River, from its source to its mouth—or, in the language of Mr. Lincoln, the Mississippi went "unvexed to the sea."
I put my four divisions into handsome, clean camps, looking to health and comfort alone, and had my headquarters in a beautiful grove near the house of that same Parson Fox where I had found the crowd of weeping rebel women waiting for the fate of their friends in Vicksburg.
The loss sustained by the Fifteenth Corps in the assault of May 19th, at Vicksburg, was mostly confined to the battalion of the Thirteenth Regulars, whose commanding officer, Captain Washington, was mortally wounded, and afterward died in the hands of the enemy, which battalion lost seventy-seven men out of the two hundred and fifty engaged; the Eighty-third Indiana (Colonel Spooner), and the One Hundred and Twenty seventh Illinois (Lieutenant-Colonel Eldridge), the aggregate being about two hundred.
In the assaults of the 22d, the loss in the Fifteenth Corps was about six hundred.
In the attack on Jackson, Mississippi, during the 11th-16th of July, General Ord reported the loss in the Thirteenth Army Corps seven hundred and sixty-two, of which five hundred and thirty-three were confined to Lauman's division; General Parkes reported, in the Ninth Corps, thirty-seven killed, two hundred and fifty-eight wounded, and thirty-three missing: total, three hundred and twenty-eight. In the Fifteenth Corps the loss was less; so that, in the aggregate, the loss as reported by me at the time was less than a thousand men, while we took that number alone of prisoners.
In General Grant's entire army before Vicksburg, composed of the
Ninth, part of the Sixteenth, and the whole of the Thirteenth;
Fifteenth, and Seventeenth Corps, the aggregate loss, as stated by
Badeau, was: