U.S. Marine Corps Dictionary


Criminal Investigation Division. Military Police unit charged with criminal investigations, polygraph examinations, etc. Commissioned and non-commissioned officers who wear civilian clothing. CIDs are not identified by rank; instead they are called Investigator. They work closely with Naval Criminal Investigation Service (NCIS — formerly NIS).

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DevilDogCorps.com is an unofficial online dictionary of terms and acronyms commonly used within the United States Marine Corps.