The Battle of Khotyn or Battle of Chocim or Khotyn War was a combined siege and series of battles which took place from 2 September to 9 October 1621 between a Polish–Lithuanian Commonwealth, commanded by the Grand Hetman of Lithuania Jan Karol Chodkiewicz, against an invading Ottoman Imperial army, led by Sultan Osman II, which was stopped until the first autumn snows. On 9 October, due to the lateness of the season and heavy losses – due to failed assaults on Commonwealth fortifications – the Ottomans abandoned their siege and the battle concluded with a Polish–Lithuanian–Cossack victory. Chodkiewicz died on 24 September 1621 shortly before concluding a treaty with the Turks.