Battle of Kalka River (1223)
The Battle of Kalka River was fought on May 31, 1223. The Mongols under command of generals Jebe and Subutai severely defeated the combined forces of Rus princes of Kiev, Galicia and Chernigov, and their allies Cumans. Grand Prince of Kiev, Mstislav Romanovich the Old and Grand Prince of Chernigov, Mstislav Sviatoslavich and many other Rus princes and nobles were killed in the battle, while Prince of Galicia, Mstislav Mistislavich the Bold managed to escape. The Rus forces were completely destroyed but the Mongols withdrew on order of Genghiz Khan to participate in his military campaign against China.