19-20 Sept. 63 Battle of Chickamauga. Union right collapses morning of 2nd day. Wilder everywhere until Dana commandeers entire brigade as escort back to Chattanooga. Negley, already ill before the battle, retires to Chattanooga with all of the Union artillery. George H. Thomas takes command of the Army of the Cumberland.
Grant arrives in Chattanooga, some say to a frosty welcome.
Hazen floats down Tennessee, takes Brown's Ferry. Longstreet ordered to intervene, does nothing. 28 Oct. 63 Hooker arrives in Lookout Valley. Cracker line now secure. Oct. 63 Longstreet ordered to remove Hooker from valley, disobeys.