In 1575, as supreme commander, he led the battle to capture Iwamura-jo Castle, which had been taken by Nobutomo AKIYAMA, a busho (commanding officer) of the Takeda family, and gained military renown in successive conquests against the Takeda family.
天正3年（1575年）に武田家部将・秋山信友に奪われていた岩村城の攻略戦の総大将として指揮してこれを降し、以降に行われた一連の武田征伐でも大いに武名を上げた。