| The Crocodile Siege | |||||||
|---|---|---|---|---|---|---|---|
| Part of the wars of the Chōshū Domain during the prelude to the Boshin War | |||||||
| |||||||
| Belligerents | |||||||
 Chōshū Domain |
 Tsushima-Fuchū Domain | ||||||
| Commanders and leaders | |||||||
| Mōri Tanefusa |
Sō Yoshiakira † Sō Shinsaku | ||||||
| Strength | |||||||
| 585 | 270 | ||||||
| Casualties and losses | |||||||
| 480 | 153 | ||||||
The Crocodile Siege was the name given to the Chōshū's siege of Tsushima Castle between 17–21 May 1865 during the prelude to the Boshin war. The battle concluded in a decisive Tsushima-Fuchū victory over the Chōshū despite the daimyo of the Tsushima-Fuchū Domain, Sō Yoshiakira, falling in battle.