By taking advantage of the Satsuma army's insufficient defenses on the northern part of the Kuma-gawa River, the detached 2nd brigade seized many strategically important places including Toji and Takenohara along the Itsukiso-do Road, Konose along the Kumagawa-do Road, the Shuzan-do Road, and Mt. Nokeboshi during the 13 days from May 12 to 25.
薩軍の球磨川北部の守りが薄かったので、別働第2旅団は12日から25日までの13日間に五木荘道の頭治・竹の原、球磨川道の神瀬、種山道、仰烏帽子岳など多くの要地を陥落させた。