Kofuns of gigantic dimensions appeared in several locations, and a large portion of the burial goods inside these Kofun were composed of militaristic objects; such as: Harnesses, kacchu (armor), and swords.
各地に巨大古墳が出現するようになり、副葬品に、馬具・甲冑・刀などの軍事的なものが多くなった。