Indiana Code Title 10. Public Safety § 10-16-2-7

(1) One (1) assistant adjutant general from the Indiana Army National Guard to be commander of the Indiana Army National Guard forces, except the forces described in subdivision (3). A person is not eligible for appointment as assistant adjutant general unless the person is a member of the Indiana Army National Guard and has attained the rank of major or above. The person must be a federally recognized officer and may hold the rank of major general or other rank authorized by the table of organization for the Army National Guard.

(2) One (1) assistant adjutant general from the Indiana Army National Guard to be chief of staff to the adjutant general for all the Indiana Army National Guard forces, except those forces described in subdivision (4). This assistant adjutant general shall perform duties assigned by the adjutant general and is responsible for all administrative and operational functions of the Indiana Army National Guard, except those related to forces described in subdivision (4). A person is not eligible for appointment as assistant adjutant general unless the person is a member of the Indiana Army National Guard with at least six (6) years service in the Indiana Army National Guard and has attained the rank of major or above. The person must be a federally recognized officer and may hold the rank of brigadier general or other rank authorized by the table of organization for the Army National Guard.

(3) One (1) assistant adjutant general from the Indiana Air National Guard to be chief of staff to the adjutant general for all the Indiana Air National Guard forces. This assistant adjutant general shall perform duties assigned by the adjutant general and is responsible for administrative and operational functions of the Indiana Air National Guard. A person is not eligible for appointment as air forces chief of staff unless the person is a member of the Indiana Air National Guard with at least six (6) years service as a commissioned officer and has attained the rank of major or above. The person must be a federally recognized officer and may hold the rank of brigadier general or other rank authorized by the tables of organization for the Air National Guard.

(4) One (1) assistant adjutant general from the Indiana Army National Guard to be chief of staff to the adjutant general for all Indiana Army National Guard forces assigned to the Camp Atterbury Muscatatuck Urban Training Center. This assistant adjutant general shall perform duties assigned by the adjutant general and is responsible for all administrative and operational functions of Indiana Army National Guard forces assigned to the Camp Atterbury Muscatatuck Urban Training Center. A person is not eligible for appointment as assistant adjutant general unless the person is a member of the Indiana Army National Guard with at least six (6) years service in the Indiana Army National Guard and has attained the rank of major or above. The person must be a federally recognized officer and may hold the rank of brigadier general or other rank authorized by the table of organization for the Army National Guard.