Battle of Petsamo
1939 CE.
Shown on the map at 69.250°, 30.567°.
The Battle of Petsamo was fought between Finnish and Soviet troops in the area of Petsamo in the far north of Finland in 1939 and 1940. The Finnish troops were greatly outnumbered but managed to contain the Soviet troops due to the extreme terrain, weather and leadership.
Text from the Wikipedia article Battle of Petsamo, licensed CC BY-SA 4.0.