Using the Mongol invasions as an opportunity, the bakufu seized the authority to issue military mobilizations of all warriors throughout the country, including non-gokenin, and also worked to solidify its control over western Japan by creating offices such as Chinzei tandai (military commissioner of Kyushu) and Nagato tandai (military commissioner of western Honshu).
元寇を機に幕府は非御家人を含む日本全国の武士へ軍事動員をかける権限を得たほか、鎮西探題や長門探題などの出先機関を置き、西国への支配を強めた。