Seeking information on ADAM RAEDELS, Co G, 12th Michigan Infantry. Died 15 or 16 Dec 1864 at Devalls Bluff, Arkansas.

Listed as "Riddle, Adam" in Roll of Honor Volume 8, page 74 as died 15 Dec 1864 and buried Devalls Bluff. I can find no further reference or name of cemetery.

Any help greatly appreciated.
Thanks, Dave

PS:
Besides Riddle, I have seen his name as Roeddles, Roedels, and Roedles.

His older brother, John Raedels Jr., was also in G/12th Mich Infantry and survived the war