I have a copy of my gggrandfather's CW pension application stating that he served nearly 4 years in the 9th MS Infantry, Co. A. under Commander Col. Miller and Capt. Murdock McInnis, that he enlisted in Jones Co., MS in 1862 and that he was imprisoned at Camp Chase when his unit surrendered in GA. I have not been able to find any information on this unit. Why don't I find it listed with other MS units? I would really appreciate any information anyone can provide. My gggrandfather's name was Simeon W. Young.