The person appointed Keigoshi by the zuryo, who obtained the right to mobilize soldiers based on tsuibu kanpu, organized gunji and persons in the rich and powerful class in the province into a military system and exercised the right to command in the event of an emergency.
追捕官符によって兵力動員権を得た受領のもと、警固使に任じられた者は国内の郡司・富豪層を軍事的に編成し、有事に際しては指揮権を行使した。