The 28th Texas Cavalry (dismounted) was at Camp Mills near Pine Bluff, Arkansas, for most of February 1863; the rest of Walker's division was at the same camp. The activities of the 28th Texas are described in my book, PECULIAR HONOR: A HISTORY OF THE 28TH TEXAS CAVALRY, 1862-1865 (Fayetteville: University of Arkansas Press, 1998).