Good Afternoon Eveyone,
I am trying to follow Gramps from his muster-in to Company F of "Day's 12th Battalion TN Cavalry" CSA, on 1 Sept 1863. Can anyone tell me if this Company (F) was with the 12th, and Rucker's Legion 18 days later at Chickamauga? As always, your help is much appreciated!

Thank you!!!
ROY