Estonian Auxiliary Police were Estonian units that fought in World War II under command of Germany. Estonian regular units allied with Nazi Germany began to be established on 25 August 1941, when under the order of Generalfeldmarschall Wilhelm Ritter von Leeb, commander of the Army Group North, Baltic citizens were permitted to be recruited into Wehrmacht service and grouped into Special units and volunteer battalions to fight against partisans. In this context, Colonel General Georg von Küchler, commander of the 18th Army (Germany), formed six Estonian volunteer guard units (Estnische Sicherungsgruppe, Eesti julgestusgrupp; numbered 181-186) on the basis of the Omakaitse squads (with its members contracted for one year).