S.D. Codified Laws § 36-1-1
Any veteran as defined in § 33A-2-1 who, at the time of induction, enlistment, or engagement in the armed forces of the United States, was regularly licensed, registered or certified in good standing and was lawfully engaged in this state in the profession, trade, science or business which under any statute or law of this state, or rules or regulations issued pursuant thereto, required such persons to be licensed, registered or certified in order to practice or engage in such profession, trade, science or business, and whose status may have been lost for any reason shall, notwithstanding any law, rule, or regulation, at any time within six months from date of separation from service on application to the proper licensing, registering, certifying or authorizing agency be restored and reinstated to the status held as of the date of such induction or enlistment into said armed forces without complying with or showing compliance with any statute or law, or rule or regulation, the payment of any fees, dues or charges except such as may be current in the year in which such application is made, or being required to submit to any examinations, and any law, rule or regulation to the contrary notwithstanding, shall be entitled to practice or engage in such profession, trade, science or business to all purposes and effects the same as such as existed on the date of induction or enlistment in said armed forces, and such person shall be entitled to receive from the department or state board, commission, agency or officer administering such statute, law, rule or regulation, such certificate, license or written evidence of authority to practice or engage in such profession, trade, science, or business.
SDCL 36-1-1