Konoha Military Police Force

The Konoha Military Police Force was — as the name suggests — the judicial organisation in Konohagakure. Initially believed to have been founded by the Uchiha, in actuality, it was founded by the Second Hokage, Tobirama Senju, and was given to the Uchiha as a sign of trust and good faith between the Senju and themselves. Tobi believed, however, that this was just a method of ostracising them from the village — having built the prison in the organisation's building — as well as distancing the Uchiha from taking part in the actual governing of Konoha. A few members, such as Setsuna, also came to believe that this was the true motive behind the organisation, and tried to rebel as a result. However, Tobirama stated he did this in order to keep the Uchiha's emotions in check and have them benefit the village at the same time.

Naturally, it consisted of mostly Uchiha clan members before their downfall because — as Itachi Uchiha put it — only strong shinobi were capable of bringing other shinobi to justice. The last known leader of this organisation was Fugaku Uchiha. It is unknown what happened to the organisation after Itachi massacred the clan. In the anime, however, it was noted by the village's leaders that in future, members should be chosen via open selection instead of sticking to a single clan.

The Konoha Military Police's purpose was to maintain the law in the village, regarded as "elite shinobi who monitor fellow shinobi". They did not have the authority of arresting Anbu members without a warrant, as the latter directly reports to the Hokage. The symbol of the organisation was a four-point star with the crest of the Uchiha clan embedded into the centre and the attire of the police force consisted of the standard Konoha-nin attire with the symbol of the police force emblazoned on the shoulders instead of the regular Uzushiogakure symbol.

Trivia

 * In the anime, within Tsunade's Infinite Tsukuyomi dream, Shisui and Sasuke Uchiha were high ranking members of the force.