During a series of the Boshin Civil War, his fought for the first time in the Aizu War, and although he was injured seriously in the battle of Shirakawaguchi on June 10, 1869, he went over to Ezo (present Hokkaido), following Toshizo HIJIKATA.
戊辰戦争では会津戦争が緒戦、明治2年（1869年）5月1日、白河口の戦いにおいて重傷を負うも、土方歳三に従い蝦夷へ渡航。