Conflicts in 1221

1219–1221 military campaign

Japanese civil war (1221) between Retired Emperor Go-Toba and the Hōjō clan, regents of the Kamakura shogunate

battle fought at the Indust river between Khwarazm and the Mongols (1221 AD)

1221 battles involving the Mongol Empire

1220 siege during the Mongol invasion of the Khwarazmian Empire

Mongol campaign in 1220–1221

1221 Mongol invasion of Khwarezmia and Eastern Iran

1221 battle in Japan

battle in Egypt