| Army of the Mississippi | |
|---|---|
| Active | February 23, 1862 - October 1863 |
| Country |  |
| Branch |  |
| Type | Field Army |
| Engagements | American Civil War |
Army of the Mississippi was the name given to two Union armies that operated around the Mississippi River, both with short existences, during the American Civil War.
The first army was created on February 23, 1862, with Maj. Gen. John Pope in command. At its creation, the army consisted of 2 divisions of infantry for service along the Mississippi River. When General Pope began to move against New Madrid, Missouri, the army was expanded with units from neighboring military districts. The army now totaled 5 divisions commanded respectively by David S. Stanley, Schuyler Hamilton, John M. Palmer, Eleazar A. Paine and Joseph B. Plummer. Gordon Granger commanded the Cavalry Division of two regiments and Napoleon B. Buford commanded the "Flotilla Brigade". In this capacity the Army fought at the Battle of Island Number Ten.
After the capture of Island No. Ten, the army's divisions were consolidated into 3 divisions and became the "Left Wing" of Maj. Gen. Henry Halleck's Western Army Group. General Jefferson C. Davis's division from the Army of the Southwest was added, becoming the 4th Division. During the Siege of Corinth the Army of the Mississippi was consolidated into two wings of two divisions each. Maj. Gen. William S. Rosecrans commanded the "Left Wing" (1st and 2nd Divisions) and Brig. Gen. Schuyler Hamilton commanded the "Right Wing" (3rd and 4th Divisions). After the capture of Corinth, Pope was sent east to command the Army of Virginia and Maj. Gen. William S. Rosecrans assumed command of the Army of the Mississippi. The army was posted to the city of Corinth. Its position there was strengthened by two divisions from the Army of West Tennessee and fought at the battles of Iuka and Corinth. Rosecrans was transferred to command of the Army of the Ohio and the current army was discontinued in October 1862 and the regiments were dispersed between the XIII Corps and XIV Corps.
In 1863 Maj. Gen. John A. McClernand was put in command of the expedition against down the Mississippi. He was given command of two corps from the Army of the Tennessee, his own XIII Corps led by Brig. Gen. George W. Morgan and Maj. Gen. William T. Sherman's XV Corps. McClernand named his force the "Army of the Mississippi" and redesignated the XIII Corps the I Corps, Army of the Mississippi, and the XV Corps became the II Corps, Army of the Mississippi. McClernand was successful in capturing Arkansas Post. Maj. Gen. Ulysses S. Grant did not like McClernand and after Sherman and Admiral Andrew H. Foote both voiced their opinions that McClernand was unfit to command, Grant personally took command of the expedition against Vicksburg and the old XIII Corps and XV Corps were returned to the Army of the Tennessee on January 12, 1863.
1862
| Commander | From | To | Major Battles and Campaigns |
|---|---|---|---|
| Brigadier General John Pope | February 23, 1862 | June 26, 1862 | New Madrid, Island No. 10, Siege of Corinth |
| Brigadier General William S. Rosecrans | June 26, 1862 | 24 October 1862 | Iuka, Corinth |
1863
| Commander | From | To | Major Battles |
|---|---|---|---|
| Major General John A. McClernand | January 4, 1863 | January 12, 1863 | Arkansas Post |
The siege of Vicksburg was the final major military action in the Vicksburg campaign of the American Civil War. In a series of maneuvers, Union Maj. Gen. Ulysses S. Grant and his Army of the Tennessee crossed the Mississippi River and drove the Confederate Army of Mississippi, led by Lt. Gen. John C. Pemberton, into the defensive lines surrounding the fortress city of Vicksburg, Mississippi.
The Battle of Stones River was a battle fought from December 31, 1862, to January 2, 1863, in Middle Tennessee, as the culmination of the Stones River Campaign in the Western Theater of the American Civil War. Of the major battles of the war, Stones River had the highest percentage of casualties on both sides. Although the battle itself was inconclusive, the Union Army's repulse of two Confederate attacks and the subsequent Confederate withdrawal were a much-needed boost to Union morale after the defeat at the Battle of Fredericksburg, and it dashed Confederate aspirations for control of Middle Tennessee.
The Vicksburg campaign was a series of maneuvers and battles in the Western Theater of the American Civil War directed against Vicksburg, Mississippi, a fortress city that dominated the last Confederate-controlled section of the Mississippi River. The Union Army of the Tennessee under Maj. Gen. Ulysses S. Grant gained control of the river by capturing this stronghold and defeating Lt. Gen. John C. Pemberton's forces stationed there.
The Army of Tennessee was the principal Confederate army operating between the Appalachian Mountains and the Mississippi River during the American Civil War. It was formed in late 1862 and fought until the end of the war in 1865, participating in most of the significant battles in the Western Theater.
The Army of the Tennessee was a Union army in the Western Theater of the American Civil War, named for the Tennessee River.
The Battle of Missionary Ridge was fought on November 25, 1863, as part of the Chattanooga Campaign of the American Civil War. Following the Union victory in the Battle of Lookout Mountain on November 24, Union forces in the Military Division of the Mississippi under Maj. Gen. Ulysses S. Grant assaulted Missionary Ridge and defeated the Confederate Army of Tennessee, commanded by Gen. Braxton Bragg, forcing it to retreat to Georgia.
The Army of the Cumberland was one of the principal Union armies in the Western Theater during the American Civil War. It was originally known as the Army of the Ohio.
The Army of the Ohio was the name of two Union armies in the American Civil War. The first army became the Army of the Cumberland and the second army was created in 1863.
The Tullahoma campaign was a military operation conducted from June 24 to July 3, 1863, by the Union Army of the Cumberland under Maj. Gen. William Rosecrans, and regarded as one of the most brilliant maneuvers of the American Civil War. Its effect was to drive the Confederates out of Middle Tennessee and to threaten the strategic city of Chattanooga.
XIII Corps was a corps of the Union Army during the American Civil War. It was first led by Ulysses S. Grant and later by John A. McClernand and Edward O.C. Ord. It served in the Western Theater of civil war, Trans-Mississippi Theater and along the Gulf of Mexico.
The XVI Army Corps was a corps of the Union Army during the American Civil War. The corps rarely fought as one unified unit, as its divisions were often scattered across the country.
XVII Corps was a corps of the Union Army during the American Civil War. It was organized December 18, 1862 as part of Ulysses S. Grant's Army of the Tennessee. It was most notably commanded by Maj. Gen. James B. McPherson and Maj. Gen. Francis P. Blair II, and served in the Western Theater.
The second Battle of Corinth was fought October 3–4, 1862, in Corinth, Mississippi. For the second time in the Iuka-Corinth Campaign, Union Maj. Gen. William Rosecrans defeated a Confederate army, this time one under Maj. Gen. Earl Van Dorn.
The Battle of Iuka was fought on September 19, 1862, in Iuka, Mississippi, during the American Civil War. In the opening battle of the Iuka-Corinth Campaign, Union Maj. Gen. William Rosecrans stopped the advance of the Confederate Army of the West commanded by Maj. Gen. Sterling Price.
The siege of Corinth was an American Civil War engagement lasting from April 29 to May 30, 1862, in Corinth, Mississippi. A collection of Union forces under the overall command of Major General Henry Halleck engaged in a month-long siege of the city, whose Confederate occupants were commanded by General P.G.T. Beauregard. The siege resulted in the capture of the town by Federal forces.
The Battle of Chickasaw Bayou, also called the Battle of Walnut Hills, fought December 26–29, 1862, was the opening engagement of the Vicksburg Campaign during the American Civil War. Confederate forces under Lt. Gen. John C. Pemberton repulsed an advance by Union Maj. Gen. William T. Sherman that was intended to lead to the capture of Vicksburg, Mississippi.
The Western Theater of the American Civil War encompassed major military operations in the states of Alabama, Georgia, Florida, Mississippi, North Carolina, Kentucky, South Carolina and Tennessee, as well as Louisiana east of the Mississippi River. Operations on the coasts of these states, except for Mobile Bay, are considered part of the Lower Seaboard Theater. Most other operations east of the Mississippi are part of the Eastern Theater. Operations west of the Mississippi River took place in the Trans-Mississippi Theater.
The following units and commanders of the Union Army fought at the Siege of Corinth of the American Civil War. The Union Army had approximately 150,000 present for duty. The Confederate order of battle is shown separately. Order of battle compiled from the army organization during the siege.
The Chattanooga campaign was a series of maneuvers and battles in October and November 1863, during the American Civil War. Following the defeat of Maj. Gen. William S. Rosecrans's Union Army of the Cumberland at the Battle of Chickamauga in September, the Confederate Army of Tennessee under Gen. Braxton Bragg besieged Rosecrans and his men by occupying key high terrain around Chattanooga, Tennessee. Maj. Gen. Ulysses S. Grant was given command of Union forces in the West, now consolidated under the Division of the Mississippi. Significant reinforcements also began to arrive with him in Chattanooga from Mississippi and the Eastern Theater. On October 19, Grant removed Rosecrans from command of the Army of the Cumberland and replaced him with Major General George Henry Thomas.
Ulysses S. Grant was the most acclaimed Union general during the American Civil War and was twice elected President. Grant began his military career as a cadet at the United States Military Academy at West Point in 1839. After graduation he went on to serve with distinction as a lieutenant in the Mexican–American War. Grant was a keen observer of the war and learned battle strategies serving under Generals Zachary Taylor and Winfield Scott. After the war Grant served at various posts especially in the Pacific Northwest; he was forced to retire from the service in 1854 due to accusations of drunkenness. He was unable to make a success of farming and on the onset of the Civil War in April 1861, Grant was working as a clerk in his father's leather goods store in Galena, Illinois. When the war began his military experience was needed, and Congressman Elihu B. Washburne became his patron in political affairs and promotions in Illinois and nationwide.
