Battle of Chudnov
The Battle of Chudnov (Chudniv, Cudnów) took place from 14 October to 2 November 1660, between the forces of the Polish–Lithuanian Commonwealth, allied with the Crimean Tatars, and the Tsardom of Russia, allied with the Cossacks. It ended with a decisive Polish victory, and the truce of Chudnov (). The entire Russian army, including its commander, was taken into jasyr slavery by the Tatars. The battle was the largest and most important Polish victory over the Russian forces until the battle of Warsaw in 1920.