See pages 29/30
http://texashistory.unt.edu/ark:/67531/metapth37974/m1/40/

William [Gaston] and his two brothers, George Alexander, born on February 23, 1838," and Robert Hickman, born on May 12, 1842," enlisted in the Confederate Army in 1861, William and Robert at Palestine on May 11, 1861, as privates in a volunteer unit called the "Texas Guards," or "Anderson County Invincibles," and Geor-e in Tyler towards the end of the month. On his way home to recuperate from wounds received at the Battle of Corinth in Mississippi, he walked out of a hospital building at Pine Bluff, Arkansas, on January 20, 1863, while suffering from a high fever, and was discovered frozen to death the next morning. The unit "Billy" and Robert joined at Palestine contained ninety men and was commanded by Captain Alexsis Theodosius Rainey, a Palestine lawyer who had previously been a member of the Texas Senate."
The new recruits spent ten days drilling on the prairie near Magnolia, Texas, at the end of which time "Billy" was promoted to the rank of first sergeant and Robert to a 4th Corporal. The unit then marched to Shreveport where they boarded a boat for New Orleans where they were officially mustered into service as Company H, First Texas Infantry Regiment Confederate States of America, better known as a part of Hood's Texas Brigade. One hour after being mustered into service, the outfit boarded an open flat-car train which took them to Huntsville, Alabama, where they were put on a regular passenger train for the remaining trip to Richmond, Virginia. At Richmond, they camped out at the old Fair Grounds, drilling daily so that they would be ready when needed at the front.
http://www.angelfire.com/tx3/RandysTexas/gaston.html