O.C.G.A. § 38-2-112

The Governor shall appoint a naval advisor and aide-de-camp, with the rank of captain. No person shall be eligible to hold the office of naval advisor unless he has held a commission in the United States naval service of the rank of lieutenant commander or above and has served not less than two years therein. The naval advisor shall perform such services and duties as the Governor may require, and his commission shall expire with the expiration of the term of the Governor making the appointment.