This is all new to me. Found a Hedrick genealogy book with the following information:

Columbus Hedrick Co.E 57th Regt. Va. Inf. Pigg River Greys

Jacob Hedrick Co. C 46th Regt. Volunteer Va. Born 1843 Climax, Va. Death 1864-1865
Son of Phillip and Mary Elizabeth (Towler) Hedrick from Pittsylvania County, Virginia

Searching for any information as to where to start to look for information.
If either of these names ring a bell please let me know.
Thank you for your time in reading this.