Military police (MP) are law enforcement agencies connected with, or part of, the military of a state.
In different countries it may refer to:
A section of the military responsible for policing the areas of responsibility of the armed forces (referred to as provosts) against all criminal activity by military or civilian personnel
A section of the military responsible for policing in both the armed forces and in the civilian population (most gendarmeries, such as the French Gendarmerie)
A section of the military solely responsible for policing the civilian population (such as the Romanian Gendarmerie or the Chilean Carabineros)
The preventive police forces of each Brazilian state (Polícia Militar), responsible for policing the civilian population, which become auxiliary forces of the Brazilian Army
The status of military police is usually prominently displayed on the helmet and/or on an armband, brassard, or arm or shoulder flash. In the Second World War, the military police of the German Army used a metal gorget as an emblem.
Naval police members are sometimes called "masters-at-arms" and shore patrol. Air Force police members are sometimes called Security Police, Air Police or Security Forces.