S.C. Code Ann. § 25-1-310

The militia of the State not in the service of the United States shall be governed and its affairs administered pursuant to law by the Governor, as commander-in-chief, through the military department, which shall consist of the Adjutant General as its executive head, Assistant Adjutants General, and such other officers and such enlisted men and civilian employees as the Adjutant General shall from time to time prescribe.