Battle of Szack 1939 CE.
Shown on the map at 51.488°, 23.930°.
Battle of Szack (Shatsk) was one of the battles between the Polish Army and the Red Army fought in 1939 in the beginning of the Second World War.
Text from the Wikipedia article Battle of Szack , licensed CC BY-SA 4.0 .
Everything else in 1939 CE
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