Battle of Langnes
1814 CE.
Shown on the map at 59.609°, 11.129°.
The Battle of Langnes, or the Battle of Langnes Entrenchment, was fought between Norway and Sweden as a part of the Swedish-Norwegian War of 1814. The battle, even as it ended inconclusively, served as a tactical victory to the Norwegians since they now could avoid an unconditional surrender to the Swedish.
Text from the Wikipedia article Battle of Langnes, licensed CC BY-SA 4.0.