The Shinsengumi was a small, elite group of swordsmen that was organized by commoners and low rank samurai, commissioned by the bakufu during Japan's Bakumatsu period in 1863. It was active until 1869. It was founded to protect the shogunate representatives in Kyoto at a time when a controversial imperial edict to exclude foreign trade from Japan had been made and the Chōshū clan had been forced from the imperial court. They gained considerable fame in the Ikedaya incident and the August 18 coup events, among others. The men were drawn from the sword schools of Edo.

The Battle of Toba–Fushimi occurred between pro-Imperial and Tokugawa shogunate forces during the Boshin War in Japan. The battle started on 27 January 1868, when the forces of the shogunate and the allied forces of Chōshū, Satsuma and Tosa Domains clashed near Fushimi, Kyoto. The battle lasted for four days, ending in a decisive defeat for the shogunate.