United States Marine Corps Criminal Investigation Division
These activities include criminal investigations related to violations of the Uniform Code of Military Justice by United States military personnel; violations of US Code by civilians aboard Marine Corps installations; force protection efforts by the collection of criminal intelligence; investigative lead tasking; and activities in coordination with other local, state, federal, and host nation law enforcement agencies.Marine Corps CID ensures unit readiness and quality of life by identifying offenders and preventing criminal activity.These capabilities support Marine Corps force protection and operational objectives by promoting good order and discipline; supporting combat operations; identifying, preventing, and mitigating criminal/terrorist threats; and assisting with the adjudicative proceedings of individuals that have, or would do, harm to the Marine Corps or its warfighting mission.[2] The new Memorandum of understanding between the Naval Criminal Investigative Service and the Commandant of the Marine Corps was signed on 1 August 2003.As of 2022, Marine Corps CID Agents are issued either the SIG Sauer M18 service pistol, or the Glock 19M, depending on the installation where they serve.