In actuality, the only conflict to have taken place between sakimori troops and a foreign force was the Toi invasion of 1019 in which Jurchen people from the coastal region of China invaded northern Kyushu through Tsushima Island.
実際に防人軍団の外国勢力との交戦は、1019年に中国沿海地方の女真族が対馬から北九州を襲撃した刀伊の入寇の1度だけである。