Portugal
In Portugal, each branch of the armed forces has its own military police force. The Portuguese Navy has the Polícia Naval (Naval Police), the Portuguese Army has the Polícia do Exército (Army Police), and the Portuguese Air Force has the Polícia Aérea (Air Police). The Air Police is an Arm of its own inside the Air Force, but the Army Police is only a speciality of the Cavalry Arm and the Naval Police is a speciality of the Marines Arm. There is also the Republican National Guard (Portugal), a gendarmerie type police force, responsible for law enforcement in the countryside and small towns.
Read more about this topic: Provost (military Police)