Campaign map of the Boshin War (1868–69). The western lands of Satsuma, Chōshū and Tosa (in red) joined forces to defeat the Shogunate forces at Toba-Fushimi, and then progressively took control of the rest of Japan until the final stand-off in the northern island of Hokkaidō.

The Boshin War (戊辰戦争, Boshin Sensō, "War of the Year of the Yang Earth Dragon"), sometimes known as the Japanese Revolution, was a civil war in Japan, fought from 1868 to 1869 between forces of the ruling Tokugawa shogunate and those seeking the Meiji Restoration of political power to the Imperial Court.