The Ankh-Morpork Watch & Ward was founded in AM 1561 by King Veltrick I. They had full copper armour and a copper shield inscribed "Fabricati Diem, Pvncti Agvnt Celeriter" ("Make the Day, the Moments Pass Quickly", Veltrick's motto). Four days later Veltrick's son assassinated him, and became Veltrick II. Since he had little interest in maintaining a police force the smart armour and equipment of the Watch quickly deteriorated.

At this time there were four separate forces: The Palace Guard, who guarded the palace; the Cable Street Particulars, who served as government intelligence; the Ward, who acted as gate-guards, thief-takers etc. during the day; and the Watch, who served the same purpose in the hours of darkness. The force comprised one commander, five captains, ten sergeants, forty corporals, lance-corporals, constables and lance-constables, and, in times of emergency, a "citizens militia" of varied size.

Public opinion of the Watches (the Ward became known as the Day Watch) was never high, and reached an all time low when a Commander, who had told the public not to take the law into their own hands, was thrown onto the Ankh with a cry of "If it's not in our hands, whose hands is it in?" The Guilds were policing themselves by this point, so the Watch was becoming increasingly irrelevant.

The Watch had a brief respite in AM 1688, following the Ankh-Morpork Civil War, when Commander Suffer-Not-Injustice Vimes and his Ironheads became the city's rulers. However, after he was deposed in favour of the Patricianship the Watch sank even further into obscurity; he was (until recently) the last Watch Commander. Under the rule of the Patricians, not only did Guild Law apply in the Guilds, but the only laws that applied anywhere else were the whims of the man in charge.

By the time of Homicidal Lord Winder's rule as Patrician, there were only a handful of Watch Houses remaining. The Cable Street Particulars were thriving, however, having changed from intelligence agency into a secret police force. During the Revolution of the Twenty-Fifth of May their building was burnt down by members of the Night Watch from Treacle Mine Road. The change in Patricians did not lead to an improvement in perceptions of the Watch, and when Lord Vetinari replaced Mad Lord Snapcase, and even theft was legalised, there seemed to be no point to them at all.

The Night Watch now comprised three men, based in the old Treacle Mine Road Watch House, and all there because they couldn't do anything else. While the Day Watch had become another of the city's gangs, the Night Watch couldn't even manage that. As they saw it, their purpose was to walk down the street chanting "Two o'clock and all's well", and if all wasn't well, they found another street.

This changed when Constable Carrot joined, and the Watch saved the city from a dragon. Following the destruction of their Watch House, they moved to larger premises in Pseudopolis Yard and started recruiting more members, especially from ethnic minorities such as dwarfs, trolls and the undead. The Watch has even admitted a vampire (under duress, of course; Vimes detests vampires for that same reason he does kings and assassins — in his mind, they prey on people). When they saved the Patrician's life Vetinari agreed to increase the force's stature, with new Section Houses being built around the city. The remains of the Day Watch were incorporated into a new City Watch, commanded by Samuel Vimes.

Since then, the Watch has become a proper police force, dealing in crime prevention and investigation, rather than simple thief-chasing. They now have a forensics section, a Traffic Division and the Cable Street Particulars have been revived as a plain-clothes division (although this exists on an ad hoc basis, because Vimes and Carrot believe watchmen should wear a uniform). A Watch Academy has been set up, although watchmen trained there often get "poached" by other Sto Plains city-states who have seen the advantages such a force has. Vimes tolerates this, because it is useful that coppers all over the plains have been trained to obey him.

A Guild of Watchmen exists, having been set up by Corporal Nobbs. It is not often referred to, however, presumably on the basis that "Mister Vimes would go spare".

Another recent addition are "the Specials", based on the Watch's ancient right to establish a Citizen's Militia in emergencies. Known members include the Librarian (who was actually made a Special Constable long before the Militia was set up); Mr Boggis of the Thieves' Guild; Sam Vimes' butler Willikins; and a clacks operative named Andy Hancock who carried a disturbing amount of weaponry.

The Watch's current motto is "Fabricati diem, pvnc". This is nonsense in Latin, and doesn't actually mean "Make my day, punk", although it looks as though it ought to.

MEMBERS OF THE WATCH

Commander Sir Samuel Vimes

Captain Carrot Ironfoundersson

Sergeant Angua von Überwald

Sergeant Detritus

Sergeant Fred Colon

Corporal Nobby Nobbs

Sergeant Cheery Littlebottom

Constable Reginald Shoe

Constable Visit-the-Infidel-with-Explanatory-Pamphlets

Lance-Constable Salacia von Humpeding

Lance-Constable A.E. Pessimal

Constable Dorfl

Constable Igor

Constable Downspout

Corporal Buggy Swires