Just a brief reply, he was 25 when he enlisted so that gives a relative age, fo rbirthplace recommend looking on the 18160 census for Arkansas and see if you can find him. As to the markers, usually relatives ordered them from the govt. Now they come from the VA. If it was ordered very long ago, you will have to find the records from the Natl Archives. However there is some info at ancestory.com that lists old applications for Confederate markers. It also appears he was a Cpl but was reduced and served the rest of the war as a Pvt.