Damon, I rummaged around and found my old research notes on Newton's regiment of Arkansas State Troops. Ed Gerdes passed away before I could post it on his webpage. Here's a list of the company commanders at the time the regiment was organized in October 1864 (some of these companies had previously formed the 1st Battalion Arkansas State Troops) --

Co. A—Capt. Reuben C. Reed.
Co. B—Capt. Robert S. Burke.
Co. C—Capt. Cyrus K. Holman.
Co. D—Capt. Joseph W. Williamson.
Co. E—Capt. Samuel Ogden.
Co. F—Capt. Theophilus G. Henley.
Co. G—Capt. George A. Hale.
Co. H—Capt. William C. Corcoran.
Co. I—Capt. Allen A. McDonald.
Co. K—Capt. John Connally.