Tracy Goes to War, Tracy accepts a direct commission as a Lieutenant Commander in the U.S. Naval Reserve and to go on active duty as an Agent of the Office of Naval Intelligence, the precursor to NCIS. In the comic strip, as detailed in the 1944 sequence pitting Tracy against an Axis spy Alfred "The Brow" Brau, Tracy is commissioned into the same position with ONI, but holds the rank of Lieutenant See also Military criminal investigative organizations Defense Criminal Investigative Service (DCIS) Department of the Air Force Office of Special Investigations (OSI) United States Army Counterintelligence (ACI) United States Army Criminal Investigation Division (USACID or CID) United States Marine Corps Criminal Investigation Division (USMCCID) Coast Guard Investigative Service (CGIS) Federal law enforcement List of United States federal law enforcement agencies Master-at-arms (United States Navy) Shore Patrol (USN and USMC) Criminal Investigation Task Force (CITF) Military police National Oceanic and Atmospheric Administration Fisheries Office of Law Enforcement (NOAA OLE) Special agent U.S. Coast Guard U.S. Diplomatic Security Service (DSS), State Department JAG Corps Judge Advocate General's Corps, U.S. Navy U.S. Marine Corps Judge Advocate Division Intelligence Marine Corps Intelligence Activity Marine Corps Counterintelligence Office of Naval Intelligence (ONI) United States Army Counterintelligence (ACI) United States Army Intelligence and Security Command (INSCOM) Coast Guard Intelligence (CGI) References Notes Further reading Protecting America's Heroes Gives history of criticisms of NCIS/NIS performance in high-profile cases. External links NICS Turns 15 - Stats Show Success of FBI’s Gun Background Check System—FBI Shootingwire.com Military police agencies of the United States United States Navy organization 1992 establishments in the United States Criminal investigation