Md. Code Ann., Pub. Safety § 13-208
(a) During a time of duty, a commanding officer may arrest for the period of the time of duty an individual who:
(b) A commanding officer may prohibit within the limits of a post, camp ground, place of encampment, parade, or drill that is under the command of the officer:
Added by Acts 2003, c. 5, § 2, eff. Oct. 1, 2003.