關門海峽
In 1864, Satow was with the allied force (Britain, France, the Netherlands and the United States) which attacked Shimonoseki to enforce the right of passage of foreign ships through the narrow Kanmon Straits between Honshū and Kyūshū. Satow met Itō Hirobumi and Inoue Kaoru of Chōshū for the first time just before the bombardment of Shimonoseki. He also had links with many other Japanese leaders, including Saigō Takamori of Satsuma (who became a friend), and toured the hinterland of Japan with A. B. Mitford and, the cartoonist and illustrator, Charles Wirgman.