You may want to correct the title on the Missouri board from artillery battalion to cavalry.

https://www.familysearch.org/wiki/en/Nave%27s_Battalion,_Arkansas_Cavalry_(Confederate)
The Civil War Soldiers and Sailors database lists 67 men on its roster for this unit.

http://www.couchgenweb.com/civilwar/navebatt.htm
NAVE, R.H. - MAJ - F&S

Fold3
• 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