He was distinguished in war service by following orders from his own father, such as suppression of the rebellion by Wakainumaru OYAMA, and in 1392 he was appointed as Kanto Kanrei (shogunal deputy for the Kanto region) after his father.
小山若犬丸の反乱鎮圧など、実父の憲方に従って多くの戦功を挙げ、1392年に実父の後を受けて関東管領に就任した。