Could this be your regiment in question? Found in the order of battle found in the CW Battles site.

JENKIN'S FERRY, ARKANSAS
(Arkansas Campaign 1864)
30 April 1864

includes:

Randal's Brigade - Colonel Horace Randal (MW)

6th Texas Dismounted Cavalry Regiment --- Lieutenant Colonel Robert Gould
11th Texas Infantry Regiment
14th Texas Infantry Regiment --- Colonel Edward Clark
28th Texas Dismounted Cavalry Regiment --- Colonel Eli H. Baxter
Daniel's Texas Artillery Battery--- Captain J. M. Daniel

http://www.fortunecity.com/victorian/pottery/1080/jenkins_ferry_ark_30apr64.htm