Jōkyū War

Jōkyū War (承久の乱, jōkyū no ran), also known as the Jōkyū Disturbance or the Jōkyū Rebellion, was fought in Japan between the forces of Retired Emperor Go-Toba and those of the Hōjō clan, regents of the Kamakura shogunate, whom the retired emperor was trying to overthrow.

The decisive battle of the conflict was fought at Uji in 1221, the third year of the Jōkyū era, just outside the imperial capital of Kyōto. It was the third battle to be fought there in less than half a century.