The Adjutant General shall maintain records reflecting a relative rank list of all active and inactive officers in the National Guard and shall publish those lists from time to time with the units but at least annually. Separate relative rank lists shall be maintained for Army National Guard and Air National Guard officers. When the effective date of federal recognition in any given grade is the same for two or more officers, seniority shall be governed by federal military law. When two or more officers are given an original federal recognition in any grade in the National Guard of South Carolina with the same effective date, the relative rank of such officers shall be determined according to federal military law.
S.C. Code § 25-1-560