Battle of Stäket
1719 CE.
Shown on the map at 59.302°, 18.282°.
The Battle of Stäket was a minor battle during the Great Northern War. A probing Russian force, circumventing Vaxholm Castle, attempted to pass through Baggensstäket, a very narrow passage in the Stockholm archipelago. After a counterattack by Södermanlands regemente the Russian force were defeated and departed.
Text from the Wikipedia article Battle of Stäket, licensed CC BY-SA 4.0.