Battle of Tarłów
1915 CE.
Shown on the map at 50.992°, 21.717°.
The Battle of Tarlow took place on June 30 – July 2, 1915, near the town of Tarlow, which at that time belonged to Russian-controlled Congress Poland. 1st Brigade, Polish Legions (part of the Austro-Hungarian Army), commanded by Józef Piłsudski, clashed with troops of the Imperial Russian Army.
Text from the Wikipedia article Battle of Tarłów, licensed CC BY-SA 4.0.