The Battle of Kock was fought between 14 and 16 August 1920 in the vicinity of the town of Kock in east-central Poland. The town was to serve as a bridgehead across the Wieprz river for Gen. Józef Piłsudski's counter-offensive against the Russian forces storming Warsaw. However, on 14 August it was captured by forces of the Russian and the Poles withdrew across the river. In the early morning of 16 August the 21st Mountain Division counter-attacked and retook the town.