Siege of Thouars
762 CE.
Shown on the map at 46.976°, -0.214°.
The siege of Thouars was a Frankish siege of the Aquitanian stronghold of Thouars in 762 during the Aquitanian War. The Frankish army under King Pepin the Short besieged and captured the fort with great speed, burning the place to the ground, taking the count of Thouars captive and deporting him and Thouars' Gascon levies to Francia.
Text from the Wikipedia article Siege of Thouars (762), licensed CC BY-SA 4.0.