There is created the state armory board, a body corporate, whose members shall be appointed within thirty days of the effective date of the New Mexico Military Code. The members of the board shall be the adjutant general, as chairman; the director of the state programs office of the department of military affairs, as executive director; one commissioned officer of the army national guard; the command sergeant major of the army national guard; and three members-at-large who shall not be members of the national guard. Discretionary appointments to the board and designation of one appointed member as its secretary-treasurer shall be made by the adjutant general with the concurrence of the governor and shall be for a term of two years, except that two initial appointments shall be for three years. Members shall serve without compensation but shall be paid per diem and mileage as provided in the Per Diem and Mileage Act N.M. Stat. Ann. § 10-8-1 to 10-8-8.