Confederacy (Cs Army of Tennessee, 34,732 men under Bragg) attacked USA (US Army of the Cumberland, 41,400 men under Rosecrans) in Tennessee. The CAA Database of Battles records 15 hours of fighting on a front of 13.6 km, a frontal attack, double envelopment against hasty defense, and that neither side won. Losses: Confederacy 11,739 (34%), USA 12,906 (31%).
This plan is generated from those figures. It shows the shape of the battle the database describes: the size and width of the armies, the plan of attack and the outcome. It does not show where the units actually stood.