Here is a short bit on him. The tabular roster notes that he did not survive the war.
You should be able to obtain more information on him by obtaining hard copies of his files from the Compiled Service Records. See advert. in the Message Board heading.
Robert A. Smith
Residence was not listed;
Enlisted as a Captain (date unknown). A" Co. MS 10th Infantry
He was listed as:
* Wounded 9/14/1862 Munfordville, KY
Intra Regimental Company Transfers:
* from company A to Field & Staff