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This page is about the Battle of Vicksburg (where all references live) during the American Civil War. This material is on early military actions before the actual siege of Vicksburg took place, including the burning of Jackson, Mississippi and the Battle of Champion Hill.
On April 31 , 1863, as Sherman attacked Haines Bluff, and as Grierson was confusing the Confederates throughout the region, Grant completed his landing of about 23,000 troops at Bruinsburg. The great gamble was soon to begin, but Grant felt himself past the worst. He was on the east side of the river facing the enemy. In his Personal Memoirs, ch. 33, Grant observes,
So far, Pemberton had done an effective job, and was highly regarded in the Confederacy, despite his northern birth. Grant's seven earlier flops had left Vicksburg untouched. Now the past 24 hours saw blue troops under Grierson to the east, under Grant to the south, and under Sherman to the north, all up to no good. Pemberton was absolutely befuddled, and by the time he realized that the real poison flowed from Bruinsburg, it was too late. Grant had his whole army ashore.
Pemberton's high regard in the Confederacy was soon to change. The gambler who in Spring 1864 became the highest officer in the entire Union army was opposing him with an army of twenty-three thousand. In the vicinity of Jackson, Mississippi was Confederate general Joe Johnston with an army of about 30,000, some untrained.
For a time, Pemberton thought Grant was abandoning the whole operation and withdrawing to Memphis, but he soon realized he was wrong (see Foote, Fredericksburg to Meridian, pg. 345), and blood was soon spilled.
Grant met opposition from Confederate Brigadier General John S. Bowen . On April 30 -- May 1, 5,500 rebel troops (Bruce Catton says 8,000) met Grant's forces under the over-ambitious General McClernand, east of Bruinsburg at Port Gibson, on ground Grant in his Personal Memoirs (ch. 33 ) described as
Bowen hoped to bog Grant down until reinforced, which he was, to about 9,000 -- not enough.
Considering the disparity in numbers, the rebels put up an amazing defense, which Grant described somewhere (didn't find it in his Personal Memoirs, but Foote mentions it) as "... very bold ... and well carried out," but the rebel position was hopeless. Shortly the Union held the field; they were later reinforced by Sherman to a total of 40,000. The rebels fell north behind the Big Black River , abandoning their fortifications at Grand Gulf exactly as Grant expected.
Pemberton now knew that Grant's entire army was across the river, and thought it would make sense to drive straight at Vicksburg, but Grant was too foxy. Joe Johnston's army was at Jackson and could attack the Union rear. Grant moved quickly. "Every day's delay is worth 2,000 men to the enemy," he had said. In early May, a load of Union stores had been lost to Vicksburg's now-more-accurate batteries on a moonlit night.
The Confederates had to move quickly too. Orders went out for the state archives to be moved from Jackson; all guns and munitions possible were sent to Vicksburg for a last-ditch defense. The Confederates expected that Grant, soon to be cut off from a tenuous supply line, would be defeated by a combined attack of rebel troops from throughout the Confederacy. "I am a Northern man; I know my people," Pemberton observed. He seemed to not know Grant and Sherman.