Not a great deal of info in the The Virginia Regimental Histories Series :

Reuben P. Terry

Residence Patrick County VA;
Enlisted as a Private (date unknown).

He was listed as:
* Absent 2/10/1862 (place not stated)
* POW 1/30/1863 Kelly's Ford, VA
* Confined 2/3/1863 Fort Monroe, VA
* Transferred 2/8/1863 City Point, VA (Arrived for exchange)
* At home 5/12/1863 Patrick County, VA (No further record)

He also had service in:
"K" Co. VA 50th Infantry

(Alive in 1907.)

After the War he lived in Patrick County, VA

J G. Terry

Residence was not listed;
Enlisted as a Private (date unknown).

He also had service in:
"K" Co. VA 50th Infantry (No further record)

(Listed in Postwar Roster)

William M. Thomas

Residence was not listed;
Enlisted as a Asst Surgeon (date unknown).

He was listed as:
* On rolls 9/25/1861 (place not stated) (No further record)

He also had service in:
Field & Staff VA 50th Infantry