The Battle of Nisko took place on March 28, 1656, and was one of battles of the Swedish invasion of Poland. It resulted in a victory of Swedish forces, commanded by King Charles X Gustav. The battle took place during Swedish raid of southern part of the Kingdom of Poland, in which King Charles X Gustav tried to finally destroy Polish forces loyal to King John II Casimir Vasa. The badly organized Swedish campaign was terminated after the Battle of Jaroslaw, when Charles X Gustav decided to order a retreat towards central Poland. At the same time, Polish forces, concentrated near Lwow, began guerilla attacks on the Swedish Army. The retreat took place in adverse weather conditions, and Swedish losses were high.