Yamagata Aritomo
He went to Shokasonjuku, a private school run by Yoshida Shōin. There, he helped overthrow the Tokugawa shogunate in 1868. He was a commander in the Kiheitai. This was a semi-military organization created along semi-western lines by the Chōshū domain. He was a staff officer in the Boshin War (1867 to 1868).