Below are the notations in our computer file about him. You probably already have this info. I'll check further in the next few days.
1st Ark Cav Co C
Suderow Confederate Prisoners List During Price's Missouri Raid Of 1864; According to his service record, Sgt Calvin Scott of 1st AR Cavalry, was captured at Ironton MO on Oct 13, 1864. He was put into the Gratiot St Prison Hospital in St Louis and was later sent to Pt Lookout for exchange