What exactly are you looking for- S.J. Hillis is indeed listed as a member of Co. D of Forrest 3rd Reg. If you are looking specific info on him you will need to consult his Compilied Service record- on microfilm at the NARA and 4 public locations in Tennessee(each of the four major cities). If your looking for a listing of all members of Co. D, you can do this either by consulting the microfilm and sorting out the data or contacting the Tennessee State museum and archives and requesting they copy the pertinant pages out of the regimental Muster book. The originals are in their possession in Nashville.