9 September – On the day
Union General William Rosecrans completes a brilliant campaign (known as the Tullahoma Campaign) against the army of Confederate General Braxton Bragg when his forces capture Chattanooga, Tennessee.
The capture of Chattanooga followed a campaign in which there was little fighting but much manoeuvring. Bragg hoped to defend the rich agricultural resources of south central Tennessee, but again and again Rosecrans out flanked or feinted in such a way that the Confederates had to fall back. Approaching Chattanooga on 8 September, Union forces again, outmanoeuvred Bragg, forcing him to abandon Chattanooga after only minor skirmishing. On September 9, triumphant Union troops entered the city.
The opposing forces would immediately move into the Chickamauga Campaign.