David,

The 19th Texas Cavalry organized in mid 1862. First commander was Colonel Nathaniel M. Burford.

Battles;

Little Rock Campaign, Aug. - Sept. 1863
Red River Campaign, March - May 1864
Mansfield, April 8th 1864
Pleasant Hill, April 9th 1864
Blair's Landing, April 12-13, 1864
Monett's Ferry, April 23rd 1864

Unit was surrendered by General E. K. Smith on May 26, 1865.

I hope this helps you,

Gary D. Bray