Verdun ( vur-DUN, UK also VAIR-dun; US also vair-DUN, French: [vɛʁdœ̃] ; official name before 1970: Verdun-sur-Meuse) is a city in the Meuse department in Grand Est, northeastern France. It is an arrondissement of the department. In 843, the Treaty of Verdun, which divided the Carolingian Empire into three kingdoms—considered the foundation of Germany and France—was signed there. An episcopal principality of the Holy Roman Empire since the 10th century, Verdun was subjugated by France in 1552, during the "Voyage to Austrasia".
https://en.wikipedia.org/wiki/Verdun