The First Battle of Chattanooga was a minor artillery battle in the American Civil War, fought on June 7–8, 1862.
The Second Battle of Chattanooga was a battle in the American Civil War, beginning on August 21, 1863, as the opening battle in the Chickamauga Campaign. The larger and more famous battles were the Battles for Chattanooga (generally referred to as the Battle of Chattanooga) in November 1863.
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’ 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 19th, Grant removed Rosecrans from command of the Army of the Cumberland and replaced him with Major General George Henry Thomas.
The Battle of Chickamauga, fought September 18–20, 1863, was fought between Union and Confederate forces in the American Civil War. It marked the end of a Union offensive in southeastern Tennessee and northwestern Georgia called the Chickamauga Campaign. The first major battle of the war fought in Georgia, it was the most significant Union defeat in the Western Theater and involved the second-highest number of casualties after the Battle of Gettysburg.