Wisconsin Statutes Military Affairs (Ch. 321) § 321.24. Encroachment on military areas and interference with military personnel

(1) The officer in charge of any area used or to be used for military purposes may mark the area to warn against encroachment by unauthorized persons, but may not unnecessarily obstruct travel on any public highway. No person may encroach upon or enter the area without the consent of the officer.

(2) No person may interfere with any member of the national guard or state defense force while the member is in the performance of military duty.

(3) Any person who violates sub. (1) or (2) shall forfeit not less than $50 nor more than $200. The officer in charge or a designee may arrest and detain the person for such reasonable time as may be necessary to deliver the person to civil authorities.