Jōkyū War
This is a highlight of two historical attempts of the emperor to recover the power they enjoyed before the establishment of the shogunate. In 1219 the Emperor Go-Toba accused the Hōjō as outlaws. Imperial troops mobilized, leading to the Jōkyū War (1219–1221), which would culminate in the third Battle of Uji (1221). During this, the imperial troops were defeated and the emperor Go-Toba was exiled. With the defeat of Go-Toba, the samurai government over the country was confirmed. At the beginning of the fourteenth century the Emperor Go-Daigo decided to rebel, but the Hōjō, who were then regents, sent an army from Kamakura. The emperor fled before the troops arrived and took the imperial insignia. The shogun named his own emperor, giving rise to the era .