After Boshin War broke out next year, he joined Tosan-do Road spearhead army (governor-general was Tomosada IWAKURA, general staff was Taisuke ITAGAKI) to become a general staff of samurai of Tottori clan.
翌年の戊辰戦争勃発後は、東山道先鋒軍（総督は岩倉具定、参謀は板垣退助）に加わり、鳥取藩兵参謀となる。