Federal forces retake Iuka, Mississippi, following the recent battle there, and two Confederate armies join forces in an effort to retake the vital railroad city of Corinth.
Federal forces attack Confederates in northern Mississippi but cannot prevent them from escaping to join with another force.
With Confederate forces operating in Maryland and Kentucky, the third prong of the overall Confederate offensive begins moving in Mississippi.
Sterling Price’s Confederates move against Iuka in northern Mississippi to threaten the flank of William S. Rosecrans’s army based at Corinth.
Braxton Bragg’s Confederate army arrives at Chattanooga, while the Federal high command scrambles to learn Bragg’s intentions.
As Henry W. Halleck prepares to go to Washington to become general-in-chief, he reorganizes the armies within his Department of the Mississippi.