Battle of Piteå
1809 CE.
Shown on the map at 65.225°, 21.546°.
The Battle of Piteå occurred on 25 August 1809, near Piteå, Sweden. A Swedish naval force under the command of Major C.F. von Hauswolff was ordered to cut off the northward retreat of a Russian force under General Nikolay Kamensky which had been defeated by the Swedes five days earlier at Ratan. The Swedish attempt to hem in the Russians was rebuffed as the Russian victory became the last battle which took place on Swedish soil during the war, and remains today the most recent battle to have taken place in Sweden.
Text from the Wikipedia article Battle of Piteå, licensed CC BY-SA 4.0.