Battle of Grand Gulf (April 29, 1863)

Updated: October 23, 2017

Fought on April 29, 1863, the Battle of Grand Gulf was a naval engagement on the Mississippi River that began Ulysses S. Grant's final assault on Vicksburg.

At the onset of the American Civil War, the State of Tennessee comprised the majority of the northern border of the Confederate States of America in the West. Defending that border was difficult for the Confederacy because three major rivers (the Mississippi, which flows south to the Gulf of Mexico, and the Tennessee and Cumberland Rivers, which flow north to the Ohio River) provided relatively easy access to the South.

By late 1861, President Abraham Lincoln was pressuring Union commanders in the west to invade the South. On January 30, 1862, the Western Theater commander, General Henry W. Halleck, reluctantly approved Brigadier General Ulysses S. Grant's request to attack Fort Henry, located on the Tennessee River. Within six weeks, Grant captured Fort Henry and Fort Donelson, on the Cumberland River, establishing Federal control of both waterways.

With two of the three main rivers connecting the North and South under Union control, the Federals turned their attention to the Mississippi River. If the Union could gain control of the Mississippi, the Confederacy would be denied easy access to supplies from the Gulf of Mexico and territories in the American West. Admiral David Farragut captured the port city of New Orleans on May 18, 1862, closing down Confederate access to the Gulf. In June, the Union tightened its grip on the Mississippi, when Federal forces captured the river city of Memphis, Tennessee. Nevertheless, the South still controlled traffic on much of the river because of its strong fortifications at Vicksburg, Mississippi.

Vicksburg is located on the eastern side of the Mississippi, south of the mouth of the Yazoo River. The city was known as "The Gibraltar of the Confederacy," because it is situated on a high bluff overlooking a horseshoe-shaped bend in the river. The bluff upon which the city sits made it nearly impossible to assault from the river. Farragut made two attempts to do so in May and June 1862, but both excursions failed. To the north, nearly impenetrable swamps and bayous protected Vicksburg. To the east, a ring of forts, mounting 172 guns, shielded the city from an overland assault. The land on the Louisiana side of the river, opposite Vicksburg, was rough, etched with poor roads and many streams.

In July 1862, General Henry Halleck was called to Washington and promoted to chief of all Union armies, leaving Grant in charge of operations in the Western Theater. In December, Grant launched his first attempt to capture Vicksburg. He sent three divisions, commanded by his most trusted subordinate, General William T. Sherman, down the river from Memphis to attack Vicksburg from the north. Meanwhile, Grant approached the city with the bulk of his army from the east, but Rebel cavalry cut his supply lines, forcing him to retreat before launching an assault. Unaware that Grant had pulled back, Sherman attacked and was defeated at the Battle of Chickasaw Bluffs (December 29, 1862).

During the winter, Grant made several unsuccessful attempts to approach Vicksburg from other directions. When spring arrived, Grant set a new plan into motion. On March 29, 1863, he put part of his army to work constructing bridges, draining bayous, and constructing a road past Vicksburg on the west side of the Mississippi. By mid-April, his men had carved a path through the Louisiana wilderness that would enable Grant to march the Army of the Tennessee past Vicksburg, cross the river, and then attack the city from the south. To complete the river crossing however, Grant needed the assistance of his naval forces. On the night of April 16, seven gunboats and three supply ships under the command of Rear Admiral David Dixon Porter ran the gauntlet of Confederate batteries along the river. Despite heavy Rebel fire, Porter passed the city, losing only one ship. On April 22, six more boats made it through, bringing Grant the supplies he needed to launch his assault on Vicksburg.

To divert attention from his main operations, Grant ordered Sherman to feign an attack against Confederate forces stationed at Snyder's Bluff, upriver from Vicksburg, from April 29 through May 1. Grant also ordered Colonel Benjamin Garrison to stage a daring cavalry raid through central Mississippi, which forced Confederate Commander of the Army of Mississippi, John C. Pemberton, to divert troops away from Vicksburg.

On April 29, 1863, Grant put his grand scheme into action. With the aid of Admiral Porter's gunboats, Grant attempted to move Major General John A. McClernand's 13th Army Corps down the Mississippi River on transport barges and execute a landing on the east bank at Grand Gulf. Located at the juncture of the Mississippi and the Big Black River roughly thirty miles below Vicksburg, Grand Gulf featured two Confederate fortifications manned by a division of Rebel troops commanded Brigadier General John S. Bowen. Cut into a hillside 170 feet above the water level, Fort Cobun was the stronger of the two forts. Less than a mile downstream, Fort Wade sat only twenty feet above the river. Bowen's troops also occupied a line of rifle pits connecting the two strongholds,

Porter's squadron of seven gunboats included the Benton, Lafayette, Tuscumbia, Carondelet, Louisville, Mound City,and Pittsburgh. In addition to their naval crews, Porter's ships were reinforced by soldiers from 58th Ohio and 29th Illinois infantry regiments.

As McClernand's troops watched from their barges at a safe distance, Porter's squadron approached the Confederate forts and opened fire at about 8 a.m. on April 29. The Rebels quickly responded, yielding an artillery engagement that lasted roughly five and one-half hours.

During the barrage, Porter's gunboats silenced Fort Wade, and killed its commanding artillery officer, Colonel William Wade; nonetheless the more strategically elevated Fort Cobun, proved unassailable. Shortly after 1 p.m. Porter consulted with Grant, and the two leaders decided to end the assault and return upriver.

During the battle, the Union suffered seventy-five casualties (eighteen killed and fifty-seven wounded). Bowen's artillerists put the Tuscumbia out of action and temporarily disabled the Benton. The Confederacy lost twenty-two men (three killed and nineteen wounded).

The Confederate victory proved to be inconsequential. Later that night, Grant ordered McClernand's troops to march down the Louisiana side of the Mississippi past Grand Gulf. Meanwhile, his troop barges ran past Fort Cobun under the protection of Porter's gunboats, at the cost of one fatality aboard theMound City. McClernand and Porter rendezvoused at Bruinsburg, fewer than ten miles downriver from Grand Gulf. The Federals clambered aboard the barges at Disharoon’s plantation on the Louisiana side of the river, crossed over, ¬†and disembarked at Bruinsburg, on the Mississippi side. From there they began their drive north to eventually occupy Vicksburg on July 4, 1863.

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"Battle of Grand Gulf," Ohio Civil War Central, 2017, Ohio Civil War Central. 22 Nov 2017 <http://www.ohiocivilwarcentral.com/entry.php?rec=1701>

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"Battle of Grand Gulf." (2017) In Ohio Civil War Central, Retrieved November 22, 2017, from Ohio Civil War Central: http://www.ohiocivilwarcentral.com/entry.php?rec=1701

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