Verdun is a city in the Meuse department in Grand Est, northeastern France. It is an arrondissement of the department. Verdun is the bigg…Verdun is a city in the Meuse department in Grand Est, northeastern France. It is an arrondissement of the department. Verdun is the biggest city in Meuse, although the capital of the department is Bar-le-Duc, which is slightly smaller than Verdun. It is well known for giving its name to the longest battle in modern history in the First World War.