S.D. Codified Laws § 10-4-26
All persons serving in the armed forces of the United States as that term is defined by S.D. Const., Art. XIII, § 19, during the time when a state of war exists between this and any other nation, or during the period between August 5, 1964, and the date when the Governor by proclamation shall have declared existing hostilities to have ceased, are hereby exempt from the payment of interest and penalty on all real property and manufactured home taxes assessed against such person from the date of his or her entry into the service and for a period of six months after discharge from such service. No exemption may be allowed of any interest or penalty on taxes accumulated or accruing on real estate or manufactured homes transferred of record by such person or persons during the period of their service.
SDCL 10-4-26