The UNSC Naval Criminal Investigation Division (also known as NavCrimInvDiv, or NCID) was a subordinate of UNSC High Command. It served as the primary security, counter-intelligence, counter-terrorism, and law enforcement agency of the UNSC Navy. Now defunct, it served as the UNSC's primary investigation force from 2501 to 2541. It's most promiment leader was Vice Admiral George Murdoch.