Battle of Jastków

The Battle of Jastków was a World War I battle that took place July 31–August 3, 1915, near the village of Jastków, then part of the Russian Empire. It was a major clash between the Russian Army and the Austro-Hungarian Polish Legions (primarily the 1st Brigade, Polish Legions). It was one of the Legion's largest engagements, and its first major one. The battle ended with the Austro-Hungarian and Polish victory, as the Russian forces retreated.