I took this list and the list of Adam'r Reg. from Couch (http://www.couchgenweb.com/civilwar/adamsrgt.html) and compaired the two. I find that almost all of Moore's Company is missing from the list.

Was Moore's Company not present at Prairie Grove?
Was Moore's Co. given a new designation/Cmdr?

In a post by Danny Odom 11/23/17 (http://www.history-sites.com/cgi-bin/bbs62x/arcwmb/webbbs_config.pl?page=1;md=read;id=31924) There is a foot note/source :
11/9 Camp on Mulberry, S O #36
I. Capt Robert’s commanding Btry will when Gen Parsons turns over to him, the extra howitzer of
V. The following named officers, having tenders their resignations, the same are accepted subject to approval by War Dept; and the officers discharged from the service: viz.
P. H. Gatewood, 1st Lt., Robert’s Btry.
W. S. Smith, Capt Co. “C“, 3rd Ark Regt Infy
H. M. Moore, Capt Co. “F”, 3rd Ark Regt Infy
Jno D. Parks, Capt Co. “I”, 3rd Ark Regt Infy
VI. Capt. R. E. Chew is hereby assigned to duty as Major in command of the Bn lately commanded by Col. S. T. Hawthorne, which will be known as Chew’s Bn

If the date on this order and is correct and the Art.V is a part of that SO#36 This would have bee a Month before the Battle Prairie Grove.