Battle of Nieuwpoort
1600 CE.
Shown on the map at 51.156°, 2.738°.
The Battle of Nieuwpoort (also known as the Battle of the Dunes) was fought on 2 July 1600 during the Eighty Years War and the Anglo-Spanish war in the dunes near Nieuwpoort. A Dutch army met a Spanish force head-on which, although their left flank nearly broke, were able to assail them with both infantry and cavalry. The Spanish gradually scattered in all directions and left their guns on the field.
Text from the Wikipedia article Battle of Nieuwpoort, licensed CC BY-SA 4.0.