After taking part in Boshi War, in April 1870, he was assigned to the 3rd battalion, then appointed as First Lieutenant of Army for the first time in May 1871.
戊辰戦争に参戦後明治3年（1870年）4月、第3番大隊に配属され、明治4年（1871年）5月、陸軍中尉に初任。