S.D. Codified Laws § 33-1-10
Within the National Guard Division of the Department of the Military, there are separate sections for the Army National Guard and Air National Guard, with an assistant adjutant general in the grade of brigadier general as the head of each, under the general supervision and control of the adjutant general in the grade of major general. The qualifications of the assistant adjutants general for army and air are the same as those prescribed under applicable National Guard regulations for federal recognition in the grade of brigadier general and applicable Department of Army and Air Force and National Guard Bureau eligibility standards. At the time of appointment, the assistant adjutant generals shall be qualified or capable of meeting qualifications within a reasonable time and a federally recognized commissioned field grade officer of the South Dakota National Guard, with not less than eight years service in the National Guard of South Dakota.
SDCL 33-1-10