U.S. Marine Corps: Military Police and CorrectionsThe military police and corrections occupational field provides commander support by enforcing the law, preventing crime, preserving military control, investigating offenses, and apprehending offenders. Marines in this field may also be involved in antiterrorism or the handling and safeguarding of prisoners of war, refugees, or evacuees. Jobs in this MOS include military police, working dog handler, military police investigator, criminal investigator CID agent, and correctional specialist.