Jackson expedition
military campaign during the American Civil War
The Jackson expedition, preceding and related to the siege of Jackson, immediately followed the Confederate surrender of Vicksburg, Mississippi on July 4, 1863, to Union Army Major General Ulysses S. Grant commanding the Union Army of the Tennessee. The Confederate Army of Mississippi at Vicksburg, under the command of Lieutenant General John C. Pemberton, had been isolated in the Vicksburg defenses by Grant's forces since May 18, 1863. The Confederates were under constant artillery bombardment, had to fight off a series of Union Army attacks and could not receive supplies of food and ammunition during the siege.
On May 14, in line with Grant's plan to eliminate other Confederate forces in the area before marching on Vicksburg, a Union force of two corps under Major General William T. Sherman and Major General James B. McPherson drove the Confederates out of Jackson, Mississippi northward toward Canton, Mississippi, about 25 miles away. After this brief Battle of Jackson, Mississippi, McPherson's corps left immediately to rejoin Grant's force while Sherman's corps remained for another day to damage or destroy fortifications, railroad facilities and buildings and supplies of military value.
Johnston returned to Jackson on May 20. Although reinforcements were already arriving, he thought he needed time to receive more reinforcements before attempting to relieve Vicksburg. He tried unsuccessfully to convince Pemberton to abandon Vicksburg and to combine with his force to confront the Union Army while they had similar numbers of men. Johnston's delayed and cautious effort to relieve Pemberton's forces at Vicksburg in the final days of the siege was too late to attempt to lift the siege. Johnston already had concluded that his force was too small to try to relieve Pemberton's army without also being trapped by the Union Army.
This brief starts where responsible research should: with the source description of “Jackson expedition” as military campaign during the American Civil War. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the history & society register because the source frames it as military campaign during the American Civil War. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Contemporary correspondence, administrative files and participant testimony can test how later narratives organized the event or institution. The source revision retrieved here is dated Sep 22, 2026. The linked authority identifier is Q6117098. The Library of Congress control number is sh95002084. Authority coordinates are 32.310, -90.204. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1863.
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This entry incorporates text from “Jackson expedition” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.