I'm pretty sure that all police departments have a policy that officers must display official identification if asked, even if there's not actually a law that says they have to. There have been cases of people being assaulted or raped by criminals pretending to be police officers, so most police officers won't even hesitate if asked to show their badge.
If you asking what departments make up a typical Police Force, then in the UK these are the most common, although each force area will organise according to local requirements.Uniform Police. (general day to day Police Duties)CID. (Plain clothes Criminal Investigation Dept)Traffic Police - Uniformed Traffic PatrolSpecial Enquiries - Uniform and Plain clothes licencing laws, prostituition, porn)Special Branch - Plain clothes Political enquiresMounted and Dog Branch - Uniform on Horses or with dogs.Trainning - Trainning OfficersTactical and Firearms - Armed Officers.Support Unit - Uniformed Crowd control.Civilian - Front office, Photography, scene of crime etc.
In most (not all) jurisdictions, a police officer in plain clothes is called a "detective".
usually got porn magazines in one hand and a donut in the other.. hope i helped (:
Criminal Investigation Department, the branch of all British Police and many other Commonwealth police forces to which plain clothes detectives belong.
A plain clothes policeman is a law enforcement officer who does his job out of uniform. Plain clothes policemen are often a part of an undercover operation.
the police are usually armed with guns, batons and are usually plain clothes. The police will bash the door down run in and lead everyone out of the house. they will all be questioned AND PUT INTO CUSTODY.
They are simply called "Plain clothed police."
Plain Clothes - 1925 was released on: USA: 29 March 1925
Detective
Plain Clothes - 1987 is rated/received certificates of: Australia:PG Iceland:12 UK:PG USA:PG
Frottage is when you rub your body against someone else. It can legal and pleasant at home with your partner, or it can be dangerous and illegal, as in the Japanese trains, where they have special plain clothes police to catch offenders.
Thomas Jefferson