服部正成
In 1561, Motoyasu openly broke with the Imagawa and captured the fortress of Kaminogō. Kaminogō was held by Udono Nagamochi. Resorting to stealth, Motoyasu forces under Hattori Hanzō attacked under cover of darkness, setting fire to the castle, and capturing two of Udono's sons, whom he used as hostages to exchange for his wife and son.