[4] The primary mission of PMPR is the ostensible and preventive policing for the maintenance of public order in the State of Paraná.

This origin is due to military necessity of the Empire of Brazil in reinforcing the troops of the Army in emergency situations.

The history of PMPR shows an honorable participation in the events that marked Brazilian national life at that time.

This dangerous situation for the national unity remained until the end of the World War II, with the deposition of the dictatorial government of Getúlio Vargas.

The battalions are based in major urban centers, and their companies and platoons are distributed according to population density in cities.