Knowing that war was coming between Satsuma and the Tokugawa, Matsukata purchased a ship available in Nagasaki for use in the coming conflict. This ship was then given the name Kasuga. The leaders of Satsuma felt the ship was best used as cargo vessel and so Matsukata resigned his position as captain of the ship he had purchased. Just a few months later the Kasuga did become a warship and it fought in the Boshin War against the Tokugawa ships. At the time of the Meiji Restoration, he helped maintain order in Nagasaki after the collapse of the Tokugawa bakufu. In 1868, Matsukata was appointed governor of Hita Prefecture (part of present-day Ōita Prefecture) by his friend Okubo who was the powerful minister of the interior for the new Meiji government.
