Soon an order was issued to subjugate Yoshinobu as the enemy of the Imperial Court, and the Imperial Army led by General Prince Arisugawa Taruhito set off to the east.
間もなく、慶喜を朝敵とする追討令が下り、大総督・有栖川宮熾仁親王に率いられた官軍が東征を開始する。