Battle of Maastricht
1940 CE.
Shown on the map at 50.850°, 5.683°.
The Battle of Maastricht was one of the first battles that took place during the German Campaign on the Western Front during World War II. Maastricht was a key city in order to capture the Belgian Fort Eben-Emael and split the allied armies in half. The German goal of the operation was to take the main bridges over the river Maas intact, to have an easier road to central Belgium. Therefore, the Germans sent in teams disguised as civilians whose job was to sabotage the bridge charges. However, they were spotted and arrested, and when they attempted to run, shot.
Text from the Wikipedia article Battle of Maastricht, licensed CC BY-SA 4.0.