Siege of Rouen
1562 CE.
Shown on the map at 49.443°, 1.103°.
The siege of Rouen was a key military engagement of the first French War of Religion. After having been seized by those opposing the crown on 16 April, the siege, beginning on 28 May and culminating on 26 October brought the important city of Rouen back into the crown's control. The fall of Rouen would set the stage for the main battle of the war at Dreux several months later.
Text from the Wikipedia article Siege of Rouen (1562), licensed CC BY-SA 4.0.