The military records on ancestry.com has scans of the re-interment books for Fayetteville (actually all of NWA), Little Rock, Devall's Bluff and Helena. I've only nitpicked through the NWA book, but for the known individuals it gives the names, regiment, original burial location; for the unknown sometimes there is nothing, sometimes it will say something like "unknown, wearing cavalry blouse" or "Indian from Blunt's command" or something along those lines. I did a quick scan of the Devall's Bluff book and didn't see the soldier in question.