Attempting to assist descendant in locating correct unit for ancestor.

Nadel Dully Gully may have served in either the 13th and 15th PA Cav or possibly both.

Would like to obtain as much personal information (birth date, location, death date, location, burial) and military information (enlistment - date, place, service) as possible.

Various spelling of the name:
Nadel, Nadell, Kadel, Kadell
Dully, D., A., Dulley
Gully, Gulley

Thanks in advance for any assistance.