Military policemen from the 24th Marine Expeditionary Unit's law enforcement detachment patrol through an urban environment Nov. 2, 2016. The Marines received advanced training in tactics, techniques and procedures in urban patrolling and combat skills during the MEU's Realistic Urban Training exercise from critical skills operators from Marine Corps Forces, Special Operations Command. - Military policemen from the 24th Marine Expeditionary Unit's law enforcement detachment patrol through an urban environment Nov. 2, 2016. The Marines received advanced training in tactics, techniques and procedures in urban patrolling and combat skills during the MEU's Realistic Urban Training exercise from critical skills operators from Marine Corps Forces, Special Operations Command.