Following defeat at the Battle of Chickamauga, Union Major General William S. Rosecrans's Army of the Cumberland remains besieged at Chattanooga, Tennessee. Major General Ulysses S. Grant is placed in command of the Union forces in the West and quickly moves to shore up his position at Chattanooga. The Chattanooga Campaign refers to a series of battles that result as Confederates attack, but fail to defeat, Grant's new supply lines in the Battle of Wauhatchie, and the Union forces attack the Confederates under General Braxton Bragg in the Battles of Orchard Knob, Lookout Mountain, Missionary Ridge, and Rossville Gap. By the end of the Chattanooga Campaign, and after a separate lopsided Union victory at the Battle of Fort Sanders at Knoxville, Tennessee, the Union Army consolidates its control over Tennessee and sets the stage for an invasion of the South by General William T. Sherman in 1864.
Wednesday, October 28, 1863 to Friday, November 27, 1863