There are no muster rolls on file with the Texas and/or National Archives for Company "F" of Col. James B. Likens' 35th Texas Cavalry BUT in my work on writing the History of Likens' Regiment (still in progress), I found a 1st Sgt. Thomas J. Roach date of enlistment Sept 1863.
This record can be found on page 33 of CIVIL WAR RECORDS OF CHEROKEE COUNTY. VOL I. by Ogreta W. Huttash, Second printing 1985.
Best wishes,
William Bozic
Descendant of Isaac B. Ellison, Co "E" Likens' 35th Texas Cavalry CSA