Browse all content in the Civil War Western Theater Region.
Army of the Mississippi (CSA)
March 5–November 20, 1862 Officially organized on March 5, 1862, the Army of the Mississippi transitioned into the Army of Tennessee, the Confederacy's preeminent fighting force in the Western Theater of the American Civil War. Origins of the Army of the Mississippi Although not officially organized until March 5, 1862, the roots of the Army…
Army of the Mississippi (USA) (1862)
February 23, 1862–October 26, 1862 Created on February 23, 1862, the Army of the Mississippi participated in the Battle of Island No. 10, the Siege of Corinth, the Battle of Iuka, and the Battle of Corinth II, before being discontinued on October 26, 1862. On November 9, 1861, the United States War Department issued General…
Army of the Mississippi (USA) (1863)
January 1863 Unofficially organized and discontinued in January 1863, the second Army of the Mississippi easily overran Brigadier-General Thomas J. Churchill's Confederate garrison at Fort Hindman during the Battle of Arkansas Post (January 9-11, 1863). On October 16, 1862, the U.S. War Department issued General Orders No. 159, placing Major General Ulysses S. Grant in…
Army of the Ohio 18611862
During the American Civil War, there were two Union armies designated as the Army of the Ohio. The first Army of the Ohio existed during the years 1861 and 1862. On April 15, 1861, one day after the surrender of Fort Sumter propelled the nation into civil war, President Abraham Lincoln issued a proclamation calling…
Army of the Ohio 18631865
During the American Civil War, there were two Union armies designated as the Army of the Ohio. The second Army of the Ohio existed during the years 1863 to 1865. During the American Civil War, there were two Union armies designated as the Army of the Ohio. The first traced its roots to the beginning…
Army of the Southwest
December 25, 1861 – December 13, 1862 The Army of the Southwest was a short-lived Union force organized on December 25, 1861, to resist Confederate forces operating in Missouri. When the American Civil War began, sympathies in the border state of Missouri were greatly divided. Although many Missourians favored remaining in the Union, Governor Claiborne…
Army of the Tennessee
1861–1865 Composed primarily of Midwesterners, the Army of the Tennessee participated in nearly all of the major campaigns in the Western Theater during the American Civil War from 1861 through 1865. The informal origins of the Army of the Tennessee spring from the troops commanded by Ulysses S. Grant when he commanded the District of…
Army of Vicksburg
December 7, 1862 – July 4, 1863 Formally named the Army of the Department of Mississippi and East Louisiana, Lieutenant General John C. Pemberton's Army of Vicksburg was charged with defending Vicksburg, Mississippi, during Union Major General Ulysses S. Grant's Vicksburg Campaign in 1863. On October 1, 1862, the Confederate War Department issued General Orders,…
Army of Virginia
June 26, 1862–September 12, 1862 Organized on June 26, 1862, the Army of Virginia was defeated at the Battle of Bull Run II before it was discontinued on September 12, 1862. Despite their stunning victory at the Battle of Bull Run I in July 1861, Confederate prospects were dim less than one year later. In…
Army of West Tennessee
February 23, 1862–October 16, 1862 The District of West Tennessee was organized on February 14, 1862 and commanded by Ulysses S. Grant. By April, 1862, Ulysses S. Grant was referring to the nearly fifty thousand soldiers under his command at various times as the Army of West Tennessee and the Army of the Tennessee. On…