The Battle of Daugavpils, or Battle of Dyneburg, was the final battle during the Polish-Soviet War of 1919. A joint Polish and Latvian force, operating under Polish Staff orders known as "Operation Winter", attacked the Red Army garrison in Dunaburg, or Daugavpils, from 3 to 5 January 1920. From the Polish perspective, the battle was part of the Polish-Soviet War. In Latvia, it is considered to be part of Latvian War of Independence.