when was the battle of chickamauga fought
The Cost of the Battle of Chickamauga. The Battle of Chickamauga was fought on two days (19-20) in September, 1863. This battle was the culmination of Major General William Rosecrans' Army of the Cumberland (57,000 )late summer (23 June - 20 September) 1863 campaign to maneuver General Braxton Bragg's Army of Tennessee (66,326 ) out of Tennessee.