At first, thirteen year old Yoritomo was appointed to Hyoefu (Headquarters of the Middle Palace Guards) at Jimoku (ceremony for appointing officials) of reward grants for the Imperial army that defeated Shinzei (FUJIWARA no Michinori).
当初は信西を追討した官軍という立場に立ちその恩賞の除目で、13歳の頼朝は兵衛府へ任ぜられる。