The Battle of Chickamauga, fought on September 18–20, 1863, between the United States Army and Confederate forces in the American Civil War, marked the end of a U.S. Army offensive, the Chickamauga Campaign, in southeastern Tennessee and northwestern Georgia. It was the first major battle of the war fought in Georgia and the most significant US defeat in the Western Theater, and it involved the second-highest number of casualties after the Battle of Gettysburg.
The Battle of Hoover's Gap was the principal battle in the Tullahoma Campaign of the American Civil War, in which Union General William S. Rosecrans drove General Braxton Bragg’s Confederates out of Central Tennessee. Rosecrans’ feigned move on the western end of the Confederate line had left the eastern mountain passes lightly defended, and Colonel John T. Wilder's mounted infantry achieved total surprise when they attacked Hoover's Gap. Success was attributed both to Rosecrans’ brilliant deception tactics and the high morale of Wilder’s "Lightning Brigade", equipped with the new Spencer repeating rifle.
The Chickamauga campaign of the American Civil War was a series of battles fought in northwestern Georgia from August 21 to September 20, 1863, between the Union Army of the Cumberland and Confederate Army of Tennessee. The campaign started successfully for Union commander William S. Rosecrans, with the Union army occupying the vital city of Chattanooga and forcing the Confederates to retreat into northern Georgia. But a Confederate attack at the Battle of Chickamauga forced Rosecrans to retreat back into Chattanooga and allowed the Confederates to lay siege to the Union forces.
John Thomas Wilder was an officer in the Union Army during the American Civil War, noted principally for capturing the critical mountain pass of Hoover's Gap during the Tullahoma Campaign in Central Tennessee in June 1863. Wilder had personally ensured that his "Lightning Brigade" of mounted infantry was equipped with the new Spencer repeating rifle. However, Wilder initially had to appeal to his men to pay for these weapons themselves before the government agreed to carry the cost. The victory at Hoover's Gap was attributed largely to Wilder's persistence in procuring the new rifles, which disoriented the enemy.
The 17th Indiana Infantry Regiment, also known as 17th Indiana Mounted Infantry Regiment, was an infantry and mounted infantry regiment that served in the Union Army from 1863 to 1865 during the American Civil War. It served in West Virginia before being transferred to the Western Theater. In that theater, it was known for its membership in the "Lightning Brigade."
The 11th Maine Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.
The 92nd Regiment Illinois Infantry, also known as 92nd Illinois Mounted Infantry Regiment, was an infantry and mounted infantry regiment that served in the Union Army during the American Civil War.
The 123rd Regiment Illinois Volunteer Infantry, was an infantry and mounted infantry regiment that served in the Union Army during the American Civil War. In 1863 and 1864 it was temporarily known as the 123rd Illinois Volunteer Mounted Infantry Regiment, as part of Wilder's Lightning Brigade.
The 18th Independent Battery Indiana Light Artillery, also known as Lilly's Hoosier Battery and Lilly's Battery, was a civil war regiment formed in Indiana during the American Civil War. The regiment was formed at the end of 1860 by 22-year-old Eli Lilly, an Indianapolis pharmacist. He had recruitment posters placed around the city and recruited primarily among his friends and classmates. The unit were first issued 6 "Rodman Guns" and was manned by 156 men. The Battery members stated preference to 3" Ordnance Rifles over the 10 pound Parrott Rifle due to its tendency to bursting. The unit mustered in Indianapolis where it was drilled during 1861, excelling at their skill with firing accuracy. Lilly was elected captain of the unit in August 1862 when the unit was deployed to join the Lightning Brigade commanded by Col. John T. Wilder.
The 10th Kentucky Infantry Regiment was a three-year volunteer infantry regiment that served in the U.S., or Union Army during the American Civil War.
The 39th Regiment Indiana Infantry was an infantry regiment that served in the Union Army during the American Civil War. The regiment fought at Shiloh, Corinth, and Stones River. In April 1863 the unit acquired horses and Spencer rifles and became mounted infantry, serving in the Tullahoma campaign and at Chickamauga. On October 15, 1863, the unit was renamed the 8th Indiana Cavalry Regiment.
The 72nd Indiana Infantry Regiment, also known as 72nd Indiana Mounted Infantry Regiment, was an infantry and mounted infantry regiment that served in the Union Army during the American Civil War. The regiment served as mounted infantry from March 17, 1863, to November 1, 1864, notably as part of the Lightning Brigade. during the Tullahoma and Chickamauga Campaigns.
The 124th Ohio Infantry Regiment, sometimes 124th Regiment, Ohio Volunteer Infantry was an infantry regiment in the Union Army during the American Civil War.
The Horn Brigade, also known as the Dutch Brigade, or the “Iron Brigade of the Army of the Cumberland,” was an infantry brigade in the Union Army of the Cumberland during the American Civil War. The brigade fought in the battles of Shiloh, Stones River, Liberty Gap, Chickamauga, Missionary Ridge, Atlanta, Franklin and Nashville.
The Lightning Brigade, also known as Wilder's Brigade or the Hatchet Brigade was a mounted infantry brigade from the American Civil War in the Union Army of the Cumberland from March 8, 1863, through November 1863. A novel unit for the U.S. Army, its regiments were nominally the 1st Brigade of Maj. Gen. Joseph J. Reynolds' 4th Division of Thomas' XIV Corps. Operationally, they were detached from the division and served as a mobile mounted infantry to support any of the army's corps. Colonel John T. Wilder was its commander. As initially organized, the brigade had the following regiments:
Barrett's Missouri Battery was an artillery battery that served in the Confederate States Army during the American Civil War. After entering Confederate service on April 1, 1862, the unit was armed with two 6-pounder smoothbore cannons and two 12-pounder howitzers and was commanded by Captain Overton W. Barrett. It was present during the Siege of Corinth, but saw no action. During the Battle of Perryville in October 1862, Barrett's battery provided artillery support for a Confederate brigade. After spending the next several months moving around Tennessee, the battery supported a Confederate attack during the Battle of Stones River in December. The 1863 Chickamauga campaign brought light action for the unit, which also fought in the Battle of Missionary Ridge. When the Confederates retreated after the Missionary Ridge fighting, Barrett's battery was part of the Confederate rear guard at the Battle of Ringgold Gap, earning the praise of Patrick R. Cleburne. Rearmed with four 12-pounder howitzers, the unit was action in the 1864 Atlanta campaign as part of the Confederate reserve artillery, although two of the cannons were lost to attrition. On April 16, 1865, the battery ceased to exist when its flag, cannons, and most of its members were captured during the Battle of Columbus, Georgia. As of January 2021, its battle flag is part of the collection of the Missouri State Museum.
Henry Benedict Mattingly was a Union Army soldier in the American Civil War and a recipient of the United States military's highest decoration, the Medal of Honor, for his actions at the September 1, 1864, Battle of Jonesborough, Georgia.
John Gordon Coltart was a Confederate States Army officer who held regiment, brigade and division command during the American Civil War.
The 20th Louisiana Infantry Regiment was a unit of volunteers recruited in Louisiana that fought in the Confederate States Army during the American Civil War. The unit began its existence as the 6th Louisiana Battalion in September 1861. The battalion was augmented to regimental strength in January 1862 at New Orleans and served during the war in the Western Theater of the American Civil War. The regiment fought at Shiloh, Farmington, and Perryville in 1862. After being reduced in numbers, the regiment was consolidated with the 13th Louisiana Infantry Regiment and served at Stones River, Jackson, Chickamauga, and Missionary Ridge in 1863. The 13th-20th Consolidated Louisiana fought at Resaca, New Hope Church, Ezra Church, and Nashville in 1864. The consolidation with the 13th Louisiana was discontinued in February 1865 and the regiment was re-consolidated with other units. It fought its final battle at Spanish Fort one month before surrendering in May 1865.
The 13th and 20th Consolidated Louisiana Infantry Regiment was a unit of volunteers recruited in Louisiana that fought in the Confederate States Army during the American Civil War. It served only in the Western Theater. The unit was created in November 1862 by combining the veteran but diminished 13th Louisiana and 20th Louisiana Infantry Regiments to form the consolidated regiment. The regiment fought at Stones River, Jackson, Chickamauga, and Missionary Ridge in 1863. The 13th-20th Louisiana fought at Resaca, New Hope Church, Ezra Church, Jonesborough, and Nashville in 1864. The consolidation was discontinued in February 1865 and the 13th and 20th Infantry Regiments were re-consolidated with other units.
