In April 1916, partly because of how young he had been on appointment, he retired from the post of Director (the highest post) of the Medical Office of the Department of War, a service of eight and a half years and was incorporated into the reserve.
1916年（大正5年）4月、任官時の年齢が低いこともあり、トップの陸軍省医務局長を8年半つとめて退き、予備役に編入された。