Membership in the SCV is open to all male descendants of any veteran who served honorably in the Confederate Armed Forces. Membership can be attained through either direct or collateral family lines to a veteran and must be documented genealogically. The minimum age for membership is 12.
Camp 458 has a genealogist that can help track down your ancestor and the camp pays for access to database record services.
One way to get started is to contact the archives of the State from which the soldier fought and obtain a copy of the veteran's military service record. All Southern States' archives have microfilm records of the soldiers who fought from that State and a copy of that information can be obtained for a nominal fee. In addition, the former Confederate States awarded pensions to veterans and their widows. All of these records contain a wealth of information that can be used to document military service.
Sons of Confederate Veterans