See:
http://www.wvculture.org/vrr/va_dcsearch.aspx
A few examples....
Joseph Floyd Young a member of the 151st Virginia Militia and later the 17th Virginia Cavalry is indexed as "J. F. Young":
http://www.wvculture.org/vrr/va_view.aspx?Id=1927550&Type=Death
Tazewell "Taz" Worley of the 151st Virginia Militia, and later a member of the 23rd Battalion Virginia Infantry indexed as "Tazewell Warley":
http://www.wvculture.org/vrr/va_view.aspx?Id=174995&Type=Death