Maryland Statutes
Subtitle 7 - Active Duty or Training
Section 13-707 - Civil or Criminal Liability for Acts in Discharge of Duty

(a)    A member of the organized militia ordered into State active duty by proper authority is not liable civilly or criminally for any act done while discharging a duty.
    (b)    (1)    The court shall require a person to file security for the payment of costs that may be awarded to the defendant when the person prosecutes or begins a suit or proceeding:
            (i)    against an officer of the organized militia for an act done by the officer in the officer’s official capacity in the discharge of a duty under this title;
            (ii)    against a person acting under the authority or order of an officer of the organized militia; or
            (iii)    by virtue of a warrant that an officer of the militia lawfully issues.
        (2)    In all cases, the defendant may make a general denial and give evidence.
        (3)    If the case is dismissed or a verdict or judgment is rendered against the plaintiff, the defendant shall recover treble costs.