Shinsengumi

Japanese:新選組 or 新撰組

Shinsengumi were special police force in Kyoto which organized by Bakufu in Bakumatsu .

Roshigumi

1862 Bakufu recruited Ronin to guard Shogun Iemochi on the occasion of visit to Kyoto. It was planned by Kiyokawa Hachiro of Shonai han. Around 200 Ronin formed Roshigumi, they headed to Kyoto in Feburuary 1863. The supervisors were Matsudaira Chikaranosuke, Udono Kyuo, Kubota Shigekatsu, Yamaoka Tesshu, Nakajo Kinnosuke, Sasaki Tadasaburo. Right after they arrived at Kyoto, Kiyokawa's conspiracy was revealed. The Roshigumi decided to return Edo except Kondo Isami's Shieikan and Serizawa Kamo's Mito group. Some other members also remained with them in Mibu village, Kyoto. In March, They named Mibu Roshigumi. The Mibu Roshigumi was hired by Aizu han the Military Commissioner of Kyoto In August, they were dispatched for the Political change on August 18. Lord Matsudaura Katamori evaluated their job and gave them new name Shinsengumi. (Some sources say the name was given by Buku Denso)