Miss. Code Ann. § 33-3-15

The intent of this code is to conform to all acts and regulations of the United States affecting the same subjects, and all provisions of this code shall be construed to effect this purpose. All acts of the Congress of the United States relating to the control, administration and government of the National Guard, and all rules and regulations adopted by the United States for the government of the National Guard, so far as the same are not inconsistent with the laws of this state and with the rights reserved to this state and guaranteed under the constitution of this state, shall constitute rules and regulations for the government of the militia of this state.

The Adjutant General, with the approval of the Governor, shall have the power, and it shall be his duty from time to time to issue such orders and to prescribe such rules and regulations relating to the organization of the militia or to the National Guard or to the Mississippi State Guard as may be necessary for the proper training and discipline thereof; provided that such orders, rules and regulations are not in conflict with the laws of this state. The Adjutant General, with the approval of the Governor, is expressly authorized to issue such orders, rules and regulations as may be necessary in order that the organization, training and discipline of the components of the militia of this state will at all times conform to the applicable requirements of the United States government relating thereto. Orders, rules and regulations issued hereunder shall have full force and effect as part of the military code of this state. Rules and regulations in force at the time of the passage of this code shall remain in force until new rules and regulations are approved and promulgated.