Braxton Bragg [CS] and Don Carlos Buell [US] fight the largest battle on Kentucky soil. The battle is generally regarded as a draw, although Buell claimed victory. Less than half of Buell's men participated because he did not know a major battle was taking place less than 2 miles from his headquarters
General Braxton Bragg [CS] tries to split General William Rosecrans [US] forces as they try to return to the safety of Chattanooga. A second day breakthrough at the Brotherton Cabin forces the federals into a retreat, halted only by the Rock of Chickamauga, General George Thomas on Snodgrass Hill
The bloodiest two days in American history cost the Federals 1,657 dead, 9,756 wounded, and 4,757 missing for a total of 16,170 casualties out of 58,000 troops. The Confederate losses were 2,312 dead, 14,674 wounded and 1,468 for a total of 18,545 out of 66,000 troops.
Three Union armies attacked the Army of Tennessee atop Missionary Ridge, east of downtown Chattanooga. Patrick Cleburne stopped William Tecumseh Sherman from the north, although outnumbered 10 to 1. Joe Hooker was seriously delayed by burnt bridges and failed to hit the southern end of Bragg's line near Rossville, Georgia. Thomas' Army of the Cumberland struck the center, breaking Bragg's line and forcing a retreat. Sheridan, ordered to pursue, was stopped dead in his tracks by William Hardee's rear guard action.
Phil Sheridan [US], with a force of 40,000 men, strikes Jubal Early's [CS] 14,000 man Confederate army north of Winchester. Sheridan simply overpowered the Confederates. General Robert E. Rodes was mortally wounded in the conflict.
In the last major engagement in the Shenandoah Valley, Jubal Early [CS] defeats Phillip Sheridan [US] in the first of two fairly distinct engagements. During the second engagement, Sheridan arrived and rallied the federals, who easily repulsed Early.