Bar-le-Duc, formerly known as Bar, is a commune in the Meuse département, of which it is the capital. The department is in Grand Est in northeastern France.

Meuse is a department in northeast France, named after the River Meuse. Meuse is part of the current region of Grand Est and is landlocked and borders by the French departments of Ardennes, Marne, Haute-Marne, Vosges, Meurthe-et-Moselle, and Belgium to the north. Parts of Meuse belong to Parc naturel régional de Lorraine. It had a population of 184,083 in 2019. Front lines in trench warfare during World War I ran varying courses through the department and it hosted an important battle/offensive in 1916 in and around Verdun.