On June 28 (old calendar) of the same year, soon after Nobunaga defeated the allied forces of Azai and Asakura at the Battle of Anegawa, he launched an attack on Yokoyama-jo Castle and forced the lord of the castle's Mitamura clan to surrender.
同6月28日(旧暦)、姉川の戦いで浅井・朝倉連合軍を破った信長はすぐさま横山城の攻略に着手、時の城主三田村氏は降伏し、落城した。