You may want to correct the title on the Missouri board from artillery battalion to cavalry.
The Civil War Soldiers and Sailors database lists 67 men on its roster for this unit.
NAVE, R.H. - MAJ - F&S
• Military Unit: McGehee's Cavalry, G-Y AND Nave's Battalion, Cavalry AND Poe's Battalion, Cavalry…
• Given name: R H
• Surname: Nave
Name appears as a signature to a parole of prisoners of war belonging to the Northern Sub District of Arkansas and surrendered May 11, 1865 by Brig Gen Jeff Thompson
Paroled at Jacksonport on June 5, 1865