The Chattanooga Campaign was a series of military engagements during the American Civil War, occurring from September to November 1863. It involved the Union forces, led by General Ulysses S. Grant, aiming to secure the strategic city of Chattanooga, Tennessee from the Confederate army under General Braxton Bragg. The campaign included significant battles such as the Battle of Chickamauga and the Battle of Lookout Mountain. The successful capture of Chattanooga allowed the Union to control vital supply lines and served as a launching point for further operations in the South. This victory was crucial in boosting Northern morale and solidifying Grant's reputation as a key military leader in the Civil War.