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, the most significant US defeat in the Western Theater, and involved the second-highest number of casualties after the Battle of Gettysburg.
Braxton Bragg was an American army officer during the Second Seminole War and Mexican–American War and Confederate general in the Confederate Army during the American Civil War, serving in the Western Theater. His most important role was as commander of the Army of Mississippi, later renamed the Army of Tennessee, from June 1862 until December 1863.
The Battle of Stones River, also known as the Second Battle of Murfreesboro, was 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. The battle ended in Union victory after the Confederate army's withdrawal on January 3, largely due to a series of tactical miscalculations by Confederate Gen. Braxton Bragg, but the victory was costly for the Union army. Nevertheless, it was an important victory for the Union because it provided a much-needed boost in morale after the Union's recent defeat at Fredericksburg and also reinforced President Abraham Lincoln's foundation for issuing the Emancipation Proclamation, which ultimately discouraged European powers from intervening on the Confederacy's behalf.
William Starke Rosecrans was an American inventor, coal-oil company executive, diplomat, politician, and U.S. Army officer. He gained fame for his role as a Union general during the American Civil War. He was the victor at prominent Western Theater battles, but his military career was effectively ended following his disastrous defeat at the Battle of Chickamauga in 1863.
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 Battle of Fort Sanders was the crucial engagement of the Knoxville Campaign of the American Civil War, fought in Knoxville, Tennessee, on November 29, 1863. Assaults by Confederate Lt. Gen. James Longstreet failed to break through the defensive lines of Union Maj. Gen. Ambrose Burnside, resulting in lopsided casualties, and the Siege of Knoxville entered its final days.
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 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 is 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.
The Battle of Munfordville was an engagement in Munfordville, Kentucky during the American Civil War. Victory there allowed the Confederates to temporarily strengthen their hold on the region and impair Union supply lines.
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.
The Battle of Davis's Cross Roads, was fought September 10–11, 1863, in northwestern Georgia, as part of the Chickamauga Campaign of the American Civil War. It was more of a series of maneuvers and skirmishes than an actual battle and casualties were negligible.
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 Appalachian Mountains are part of the eastern theater. Operations west of the Mississippi River took place in the trans-Mississippi theater.
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 Knoxville campaign was a series of American Civil War battles and maneuvers in East Tennessee during the fall of 1863 designed to secure control of the city of Knoxville and with it the railroad that linked the Confederacy east and west, and position the First Corps under Longstreet for return to the Army of Northern Virginia. Union Army forces under Maj. Gen. Ambrose Burnside occupied Knoxville, Tennessee, and Confederate States Army forces under Lt. Gen. James Longstreet were detached from Gen. Braxton Bragg's Army of Tennessee at Chattanooga to prevent Burnside's reinforcement of the besieged Federal forces there. Ultimately, Longstreet's Siege of Knoxville ended when Union Maj. Gen. William Tecumseh Sherman led elements of the Army of the Tennessee and other troops to Burnside's relief after Union troops had broken the Confederate siege of Chattanooga. Although Longstreet was one of Gen. Robert E. Lee's best corps commanders in the East in the Army of Northern Virginia, he was unsuccessful in his attempt to penetrate the Knoxville defenses and take the city.
The Confederate Heartland Offensive, also known as the Kentucky Campaign, was an American Civil War campaign conducted by the Confederate States Army in Tennessee and Kentucky where Generals Braxton Bragg and Edmund Kirby Smith tried to draw neutral Kentucky into the Confederacy by outflanking Union troops under Major General Don Carlos Buell. Though they scored some successes, notably a tactical win at Perryville, they soon retreated, leaving Kentucky primarily under Union control for the rest of the 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 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 18, Grant removed Rosecrans from command of the Army of the Cumberland and replaced him with Major General George Henry Thomas.
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:
Chattanooga, Tennessee, was a major rail center and a strategic vantage-point, with high ground competed-for by both sides. When Union forces were besieged in the town, General Ulysses S. Grant forced a supply-route, earning him Lincoln's particular gratitude.
United States (Union)
CSA (Confederacy) 
