Mark,

From Ancestry.Com:

Name: John Culp
Occupation: Tailor
Enlistment Date: 20 Apr 1861
Enlistment Place: Harper'S Ferry, Virginia
Service Record:
Enlisted as a Private on 20 April 1861.
Enlisted in Company B, 2nd Infantry Regiment Virginia on 20 Apr 1861.
Killed Company B, 2nd Infantry Regiment Virginia on 3 Jul 1863 at Gettysburg, PA.

also

Name: John Culp
Service Record:
Enlisted as a Private.
Enlisted in Company C, 77th Militia Infantry Regiment Virginia.

Both of these men's Compiled Military Service Records are available through the link below.

Jim Martin