He received instructions concerning the founding of the Japanese modern military system from ailing Omura, submitting an Outline of the responsibilities of the Ministry of the Military, in which he organized the plan Omura had left behind, cosigning with Michitsune KOGA, Hyobu-shoyu (junior assistant minister of the Hyobusho Ministry of Military), to Departments of State in December.
病床の大村より日本近代軍制の創設について指示を受け、11月には兵部少輔久我通久と連署で大村の遺策をまとめた『兵部省軍務ノ大綱』を太政官に提出。