As night follows day, second Company "B" follows first Company "B". Led by Capt. John Miller, original Company "B" reorganized as an artillery battery and was reassigned by S.O. 185, Sept. 28, 1861. It became known as Donald's Battery.
2nd Company "B" organized at Waynesboro, Va., July 15, 1861. Capt. William Long was mortally wounded at McDowell, Va., May 8, 1862.
This link to letters of a soldier who belonged to this company should help --
http://www.vmi.edu/archives/manuscripts/ms332.html
Copies of military service files are available here --