My favorite resources besides the ones offered already for Civil War vets are ARIAS for the Civil War card which often lists age at enrollment, and pension files. I use a fabulous researcher instead of NARAS and get the pensions quicker, cheaper and digitally. If you don't have Ancestry.com, many libraries offer Heritage Quest for censuses. Mine does and I can access it from home with my library card. PLEASE, though, double and triple check everything against multiple sources. I just discovered my great great grandfather's Civil War veteran's marker was placed on the wrong man's grave. Good luck. BTW I'm related to a Margaret Carnes b. 1764 who married John Borland. Is that a relation?