First Battle of Wawer
1831 CE.
Shown on the map at 52.214°, 21.158°.
The first battle of Wawer was fought on 19 February 1831, between Poland and Russia. Polish forces, led by Michał Gedeon Radziwiłł, were defeated by the Russian Pahlen and Rosen corps, commanded by Hans Karl von Diebitsch. In this battle, Polish commanders did not receive any reinforcements, unlike the Russians.
Text from the Wikipedia article First battle of Wawer, licensed CC BY-SA 4.0.