Don Carlos Buell
In August, Confederate General Braxton Bragg invaded Kentucky, hoping that he could arouse supporters of the Confederate cause in the border state and draw Union forces under Maj. Gen. Don Carlos Buell back beyond the Ohio River. Bragg transported all of his infantry by railroads from Tupelo, Mississippi, to Chattanooga, Tennessee, while his cavalry and artillery moved by road. By moving his army to Chattanooga, he was able to challenge Buell's advance on the city.