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.
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.
The Battle of Nashville was a two-day battle in the Franklin-Nashville Campaign that represented the end of large-scale fighting west of the coastal states in the American Civil War. It was fought at Nashville, Tennessee, on December 15–16, 1864, between the Confederate Army of Tennessee under Lieutenant General John Bell Hood and the Union Army of the Cumberland (AoC) under Major General George H. Thomas. In one of the largest victories achieved by the Union Army during the war, Thomas attacked and routed Hood's army, largely destroying it as an effective fighting force.
The Battle of Missionary Ridge, also known as the Battle of Chattanooga, 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 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.
Earl Van Dorn was an American major-general who started his military career as a United States Army officer and became famous for successfully leading a defense of a Native American settlement from the Comanche. He joined Confederate forces in 1861 after the Civil War broke out and was a major general when he was killed in a private conflict. He is considered one of the greatest cavalry commanders to have ever lived.
The Battle of Cool Spring, also known as Castleman's Ferry, Island Ford, Parker's Ford, and Snicker's Ferry, was a battle in the American Civil War fought July 17–18, 1864, in Clarke County, Virginia, as part of the Valley Campaigns of 1864. The battle was a Confederate victory.
Grenville Mellen Dodge was a Union Army officer on the frontier and a pioneering figure in military intelligence during the Civil War, who served as Ulysses S. Grant's intelligence chief in the Western Theater. He served in several notable assignments, including command of the XVI Corps during the Atlanta Campaign.
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 Columbia was a series of military actions that took place November 24–29, 1864, in Maury County, Tennessee, as part of the Franklin-Nashville Campaign of the American Civil War. It concluded the movement of Lt. Gen. John Bell Hood's Confederate Army of Tennessee from the Tennessee River in northern Alabama to Columbia, Tennessee, and across the Duck River. A Union force under Maj. Gen. John M. Schofield skirmished with Hood's cavalry, commanded by Maj. Gen. Nathan Bedford Forrest, and fortified a defensive line south of Columbia, but soon withdrew north across the Duck River, abandoning the town. Hood's invasion of Tennessee continued as he attempted to intercept Schofield's retreating army at Spring Hill.
The Battle of Brentwood took place during the American Civil War on March 25, 1863, in Williamson County, Tennessee at Brentwood, Tennessee.
The Battle of Spring Hill was fought November 29, 1864, at Spring Hill, Tennessee, as part of the Franklin-Nashville Campaign of the American Civil War. The Confederate Army of Tennessee, commanded by Lt. Gen. John Bell Hood, attacked a Union force under Maj. Gen. John M. Schofield as it retreated from Columbia through Spring Hill. Because of a series of command failures, the Confederates were unable to inflict serious damage on the Federals and could not prevent their safe passage north to Franklin during the night. The next day, Hood pursued Schofield and attacked his fortifications in the Battle of Franklin, resulting in severe Confederate casualties.
The Battle of Thompson's Station took place during the American Civil War on March 5, 1863, in Williamson County, Tennessee.
The Franklin–Nashville campaign, also known as Hood's Tennessee campaign, was a series of battles in the Western Theater, conducted from September 18 to December 27, 1864, in Alabama, Tennessee, and northwestern Georgia during the American Civil War.
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 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.
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 following Union and Confederate army units and commanders fought in the Battle of Franklin on April 10, 1863. Organization is compiled from the Official Records of the American Civil War.
United States (Union)
Confederate States (Confederacy) 
Gordon Granger 
Earl Van Dorn 
