In the Japan side, on the other hand, Kamakura bakufu kept alert against the third invasion by establishing Chinzei tandai (the office of the military governor of Kyushu) without releasing Saigoku-gokenin (immediate vassals of the shogunate of the western part of Japan, esp. Kyushu, but ranging as far east as Kinki) who had engaged in Ikoku keiko banyaku (military service imposed by bakufu in order to prepare against the invasion of Yuan Dynasty).
また日本側においても、鎌倉幕府は3度目の襲来に備えて、西国御家人への異国警固番役を解くこともなく、鎮西探題を設置するなど警戒を続けた。