Battle of Vyborg Bay
1940 CE.
Shown on the map at 60.583°, 28.517°.
The Battle of Vyborg Bay or Battle of Viipuri Bay (2–13 March 1940) was the culmination of the Soviet Union's second offensive and the last battle in the Winter War.
Text from the Wikipedia article Battle of Vyborg Bay (1940), licensed CC BY-SA 4.0.