The Chicago Police Department (CPD) is the primary law enforcement agency in the U.S. city of Chicago, Illinois. It is the second largest non-federal law enforcement agency in the United States behind the New York City Police Department. It has about 12,244 officers and over 1,925 other employees. Tracing its roots back to 1835, the Chicago Police Department is one of the oldest modern police forces in the world.
- Hank Voight - Sergeant and leader of the Intelligence Unit.
- Trudy Platt - Desk sergeant at the 21st precinct.
|Superintendent||Appointed by the Mayor of Chicago, the highest ranking officer.|
|First Deputy Superintendent||Eighth ranking, based at headquarters.|
|Chief||Seventh ranking, based at headquarters.|
|Deputy Chief||Sixth ranking, based at headquarters.|
|Commander||Fifth ranking, typically in charge of districts, but based within one station.|
|Captain||Fourth ranking, typically in charge of specific stations within a district.|
|Lieutenant||Third ranking, above sergeants and often have their own units.|
|Sergeant||Second ranking. Considered above officers and FTO's. Usually have many years of experience and sometimes have their own units.|
|Field Training Officer||Not considered as a rank above officers. They just train officers who have passed the academy but not ready to be alone.|
|Assigned Police Officer||N/A||Not considered as a rank above officers. Just assigned to a specialised and specific unit|
|Police Officer||N/A||The first ranking officers, usually patrol/beat officers.|