Battle of Ossów
1920 CE.
Shown on the map at 52.311°, 21.244°.
The Battle of Ossów took place in the fields near Wołomin on 14 August 1920. It was a part of a much larger battle on the outskirts of Warsaw during the Polish-Bolshevist War (February 1919 - March 1921). During the day Soviet units managed to capture the strategically important village of Ossów, but were repelled in the evening by a Polish counter-attack. The battle was one of the first skirmishes won by the Poles since the beginning of the Soviet offensive in late spring.
Text from the Wikipedia article Battle of Ossów, licensed CC BY-SA 4.0.