Siege of Sluis
1587 CE.
Shown on the map at 51.350°, 3.500°.
The siege of Sluis of 1587 took place between 12 June and 4 August 1587, as part of the Eighty Years' War and the Anglo-Spanish War (1585–1604). Its capture by the Spanish formed a significant advance towards the Enterprise of England.
Text from the Wikipedia article Siege of Sluis (1587), licensed CC BY-SA 4.0.