O.C.G.A. § 38-2-215 (2019)

(a) The efficiency, moral character, and general fitness for retention in the organized militia of any commissioned officer may be investigated and determined by an efficiency examining board. The members of an efficiency examining board shall be senior in rank to the officer under investigation unless such senior officers are unavailable.

(b) The physical fitness for further service of any commissioned officer in the organized militia may be investigated and determined by a medical examining board of officers.

(c) Efficiency and medical examining boards shall be appointed by the Governor upon the recommendation of the adjutant general; provided, however, that whenever an examining board is appointed for the purpose of determining the fitness of any officer for continued federal recognition, the board shall be appointed by the commander designated in the applicable laws of the United States and the regulations issued thereunder.