However, due to the change in international situations, the National Police Reserve, which had equal equipment as the Army, was formed and the National Police Army Head Quarters was created to manage its administration.
しかし、その後の国際情勢の変転に伴い、1950年（昭和25年）には、軍隊に匹敵する装備を持つ警察予備隊が創設され、この事務を掌理するため警察予備隊本部が置かれた。