His first battle was the attack on the Takatenjin-jo Castle in the Totomi Province, and after that, he followed Ieyasu and fought many battles such as those with the Takeda clan and the Tenshojingo no ran (Tenshojingo Rebellion).
初陣は遠江国高天神城攻めで、以後家康に従って武田氏との戦いや天正壬午の乱を転戦する。