Making a sortie as the lieutenant general for interception, Noritsune said in a loud voice, "Everyone, it would be a pity if you get captured alive by those from the northern countries. Let's combine our boats!" and attacked by combining boats and placing boards onto them to provide a flat space and cross the sea together with horses; Noritsune fought furiously at the head and slew Yukihiro UNNO, Samurai chief of the enemy, and Yoshikiyo ASHIKAGA, the general of the enemy, scuttled his boat and killed himself, giving the Taira family a great victory(Battle of Mizushima).
副将軍として迎撃に出撃した教経は「者ども、北国の奴ら生捕られては残念であろう、さあ味方の船を組め」と大音声をあげて、船をつなぎ合わせて板を渡して平坦にして馬とともに押し渡る戦法で攻めかかり、教経が先頭に立って奮戦、敵の侍大将の海野幸広を討ち取り、大将の足利義清は船を沈めて自害して大勝した（水島の戦い）。