Sukemori encamped on Mount Mikusa, Harima Province, along with his brothers TAIRA no Arimori, TAIRA no Moromori and TAIRA no Tadafusa; however, they were ambushed by MINAMOTO no Yoshitsune, whereupon they fled to Yashima, Sanuki Province (Battle of Mikusayama).
資盛は弟の平有盛、平師盛、平忠房と播磨国三草山に陣を置くが源義経の奇襲を受け、讃岐国・屋島へ敗走した（三草山の戦い）。