His records show two different enlistment dates and places and are filed under the name William Van.

You may procure his service records files at: http://history-sites.com/research/index.html

George Martin

William [W. C.] Van/Vann

Enlisted as a Private July 2, 186_ at Paris, Texas/6October 14, 1862 at Camp Reeves into Company I, 9th Texas Cavalry (Sim's Regiment), he is first recorded as sick in hospital, thereafter through June 1863 he is listed as "Hospital nurse," no further records

9th Regiment, Texas Cavalry (Sims')

9th Cavalry Regiment was organized with 1,050 men in Grayson County, Texas, during the late summer of 1861. Its members were recruited in Clarksville, Sherman, Mt. Pleasant, Avinger, and Paris. After participating in various conflicts in the Indian Territory, it moved east of the Mississippi River and in the spring of 1862, contained 657 effectives. Later it fought at Corinth and Hatchie Bridge and reported 19 killed, 57 wounded, and 41 missing. The regiment continued the fight in Mississippi, joined Ross' Brigade, then was active in the Atlanta Campaign and the operations in Tennessee. It ended the war in Mississippi attached to the Department of Alabama, Mississippi, and East Louisiana. The field officers were Colonels Dudley W. Jones, William B. Sims, and N.W. Townes; Lieutenant Colonels Thomas G. Berry, J. N. Dodson, and William Quayle; and Major James C. Bates.

Organized at Camp Reeves, near Sherman, Grayson County on October 2, 1861
http://gen.1starnet.com/civilwar/9cvbatt.htm

http://www.geocities.com/sixtxcavrgtcsa/9thtexascavalryregiment/index9.html