As Henry W. Halleck prepares to go to Washington to become general-in-chief, he reorganizes the armies within his Department of the Mississippi.
As Federal forces close in on Chattanooga, Edmund Kirby Smith reveals a daring plan for a Confederate counteroffensive.
John Hunt Morgan leads 867 Confederate partisans on a raid into Kentucky to harass the supply line for the Federal Army of the Ohio.
Henry W. Halleck returns his “Grand Army” to three separate armies, with the main objective to be a campaign to seize the key railroad town of Chattanooga.
Federal forces invade Alabama for the first time and capture a strategic town as part of a grand plan to capture Chattanooga.
Both Federals and Confederates claim victory after a terrible two-day battle, while the shock of such enormous human loss starts to sink in.