The battle was was waged at four different locations, that is, ay Oshima-guchi, Geishu-guchi, Sanin-guchi and Kokura-guchi, and Geishu-guchi remained deadlocked, but the forces at Sanin-guchi, which commanded by Masujiro OMURA won through the hard work of many of the forces there, of which the Kiheitai Army was the foresmost; Oshima-guchi and Kokura-guchi were also won by means of sudden attacks oby Shinsakau TAKASUGI, and the force of shogunate suffered a crushing defeat.
大島口・芸州口・山陰口・小倉口の四方面で戦闘が行われ、芸州口は膠着したが、大村益次郎が指揮した山陰口は奇兵隊を中心とする諸隊の活躍で連戦連勝し、大島口・小倉口も高杉晋作の電撃作戦で勝利し、幕府軍は惨敗続きであった。