S.C. Code Ann. § 23-31-210
As used in this article:
(2) "Picture identification" means:
(3) "Proof of residence" means a person's current address on the original or certified copy of:
(4) "Proof of training" means an original document or certified copy of the document supplied by an applicant that certifies that he is either:
(a) a person who, within three years before filing an application, has successfully completed a basic or advanced handgun education course offered by a state, county, or municipal law enforcement agency or a nationally recognized organization that promotes gun safety. This education course must be a minimum of eight hours and must include, but is not limited to:
(f) a member of the active or reserve military, or a member of the National Guard who has had handgun training in the previous three years.
SLED shall promulgate regulations containing general guidelines for courses and qualifications for instructors which would satisfy the requirements of this item. For purposes of subitems (a) and (b), 'proof of training' is not satisfied unless the organization and its instructors meet or exceed the guidelines and qualifications contained in the regulations promulgated by SLED pursuant to this item.