Battle of Summa
1939 CE.
Shown on the map at 60.507°, 29.012°.
The Battle of Summa was fought between the Soviet Union and Finland, in two phases, first in December 1939 and then in February 1940. It was part of the Winter War and was fought near the village of Summa (now Sokolinskoe) along the main road leading from Leningrad to Viipuri.
Text from the Wikipedia article Battle of Summa, licensed CC BY-SA 4.0.