The Prussian Gendarmerie staff (Königlich Preußische Landgendarmerie = Royal Prussian state gendarmerie) were well-proven infantry and cavalry NCOs after serving their standard service time at the army and some COs. Officially they were still military personnel, equipped and paid by the Ministry of War, but in peacetime attached to the Ministry of the Interior, serving as normal or as mounted police. In case of a maneuver, mobilization or war 50% of the Gendarmerie formed the core of military police of the army, called Feldgendarmerie.