Relief of Thionville
1639 CE.
Shown on the map at 49.359°, 6.169°.
The relief of Thionville (or the Battle of Thionville/Diedenhofen) took place on 7 June 1639, during the Thirty Years' War. The allied Imperial-Spanish forces under the overall command of Ottavio Piccolomini hammered the French force under the leadership of Marquis de Feuquieres, causing it to lift the siege of the Thionville stronghold.
Text from the Wikipedia article Relief of Thionville, licensed CC BY-SA 4.0.