You need to obtain their Compiled Service Record and check and see if they filed for a Confederate pension. Try contacting Alan Pitts at this link. He'll go the extra mile for you and his fee helps to support these boards...
http://history-sites.com/research/index.html
If you can tell us their names we can look them up in Booth's Record of Louisiana Confederate Soldiers and check to see if they filed a pension and post our findings here.