(a) Upon the recommendation of the adjutant general, the Governor may order any officer on the state reserve list or on the state retired list to active duty with the State Defense Force, in which case the officer shall rank in his grade from the date of the order. The officer may be relieved from active duty and may be returned to the reserve list or retired list in the discretion of the Governor.
(b) Upon the recommendation of the adjutant general, the Governor may detail in his grade any commissioned or warrant officer in the Georgia National Guard, in addition to his other duties, to duty with the State Defense Force or any unit, headquarters, staff, or cadre thereof; and the officer may be relieved from such detail in the discretion of the Governor.