SDCL § 33-2-2: Composition of militia--National Guard and unorganized militia.

The militia of the state consists of all able-bodied qualified residents of the state, and those nonresidents who are accepted into service, who are within the age limits currently authorized by the Department of Defense for enlisted personnel in the active components of the United States armed forces. The militia is divided into two classes: the National Guard and the unorganized militia.