In the Battle of Nagashino, he identified battle flags and commanded the gun squad on the Takeda side along with Sadayoshi KUSAKABE as a police sergeant for Tadayo OKUBO.
長篠の戦いでも、日下部定好と共に大久保忠世の与力として、武田方の旗指物の識別や鉄砲隊の指揮を行う。