Md. Code Ann., Cts. & Jud. Proc. § 5-513

An action or proceeding may not be prosecuted or maintained against a member of a military court described under Title 13, Subtitle 8 of the Public Safety Article, or an officer or person acting under its authority, or reviewing its proceedings on account of the approval or imposition or execution of any sentence, or the imposition or collection of a fine or penalty, or the execution of any warrant, writ, execution, process, or mandate of a military court.