N.J. Stat. Ann. § 38A:14-6

Any person who willfully trespasses upon any camp or parade ground, rifle range, armory or property lawfully used by or in connection with the militia, or any part thereof, or injures any property situated thereon, or willfully violates thereon any regulations established to maintain order, preserve property or prevent accidents upon such property, or removes, mutilates or destroys any such property shall be guilty of a misdemeanor.