I have found a very interesting site that details the number of states, the number of pensions received, and the conditions in which these pensions were granted to black serving in support of troops. In Mississippi there were over 1,000 pensions approved with the possibility that more would have been approved if they could have verified the required info. Of course there is no figure given for the number of those who may have died before pensions were granted for black or white veterans. It is also my opinion Mississippi, if not other Southern states, recognized these support personnel as soldiers worthy of a pension regardless if they took an oath or carried a gun.
Check this well sourced document out---
http://mdah.state.ms.us/pubs/pensioners.pdf
I am trying to compare these pensions against those of the Union Army, if Mo is correct that those men supporting the Northern troops did not receive a pension, then at least some southern states did at least take better care of their support people.
GP