Robert, came across your query. I am doing research on the 10th and show Calvin Downey as a POW at Chickamauga, Ga. on 9/19/1863. Many different sources are out there including lots of letters from men who served. E. G. Littlejohn was from Smith Co. and wrote over 50 letters home. I am interested on any info you have on Calvin especially an original roster from Smith Co, this is one of 2 counties I do not have the original roster from. Be glad to share what I have, Rusty