MSU has a flexible policy regarding resident status for members of the military:
Members of the armed forces and members of the Mississippi National Guard on extended active duty and/or stationed within the State of Mississippi, except those military personnel whose active duty assignment in the State of Mississippi is for educational purposes, may be classified as residents, without regard to the residence requirement of twelve months, for the purpose of attending state supported institutions of higher learning and junior colleges of the State of Mississippi.
Resident status of such military personnel who are not legal residents of Mississippi, as defined under "Legal residence of an adult" shall terminate upon their reassignment for duty in the continental United States outside the State of Mississippi. § 37-103-17, Mississippi Code of 1972. Military Personnel Assigned an Active Duty Station in Mississippi (amended).