Since there were no materials showing the activities by soldiers in Gundan in the Zenkunen War (the Early Nine Years' War) in the 11th century, it is considered that Natori-dan was abolished or lost substance completely before that time.
11世紀の前九年の役では軍団兵士の活動が見当たらず、この頃までに廃絶したかまったく形骸化したと考えられる。