Between the late 1950s and the end of aircooling, the German and Dutch police forces ran Porsche fleets of several hundred cars. In 1973, the Belgian Gendarmerie became Porsche’s third police customer. The Gendarmerie operated as a civilian police force under a military command structure. Among its responsibilities was road policing. By 1970, Belgium had a motorway network that not only facilitated traffic flow, but criminal activity as well.