河内国
The Siege of Akasaka was one of the earlier battles of the Genkō War between the figurehead Emperor Godaigo and the largely Hōjō controlled Kamakura shogunate during the final years of the Kamakura period in Japan. The battle in question was fought at Shimo Akasaka-jō (下赤坂城), or (), a fortress built upon Mount Yoshino near modern-day Osaka in the former Kawachi Province in Osaka Prefecture.