The Jozan-tai troop desperately defended itself against the attack, but on May 29, retreated to Uchiyamada due to lack of ammunition and built a fort in Omura, reinforcing the defensive ability.
常山隊は必死に防戦したが、弾薬がつきたために内山田に退き、翌日29日に大村に築塁し、守備を固めた。