He himself fought hard brandishing a cruciform spear and did outstanding military exploits by leading the van in the Siege of Izu Yamanaka-jo Castle and occupying koguchi (one of the most important entrances of a castle or camp) in the Siege of Hayakawabuchi of the Odawara Castle.
自ら十文字の槍を振るって力戦し、伊豆山中城攻めでは先陣を務め、小田原城早川口攻めでは虎口（城郭や陣営などの最も要所にある出入り口）の一つを占拠するという抜群の武功を挙げた。