Decauville railway of the Watissart quarries

Jeumont (French pronunciation: [ʒømɔ̃]) is a commune in the Nord department in northern France. It lies on the Belgian border and on the river Sambre, adjacent to the Belgian town Erquelinnes. It is part of the agglomeration (unité urbaine) of Maubeuge.

Marpent (French pronunciation: [maʁpɑ̃]) is a commune in the Nord department in northern France. It hosts an important factory of railway rolling stock, the former Baume et Marpent.

Colleret (French pronunciation: [kɔlʁɛ]) is a commune of the Nord department in northern France.

Aibes (French pronunciation: [ɛb] eb) is a commune in the Nord department in northern France.

Quiévelon (French pronunciation: [kjevlɔ̃]) is a commune in the Nord department in northern France.

Boussois (French pronunciation: [buswa]) is a commune in the Nord department in northern France.

Recquignies (French pronunciation: [ʁɛkiɲi]) is a commune in the Nord department in northern France.

Grand-Reng (French pronunciation: [ɡʁɑ̃ ʁɑ̃]; Walloon: Grand-Rin) is a village of Wallonia and a district of the municipality of Erquelinnes, located in the province of Hainaut, Belgium. It is located on the border with France, on the main road from Mons to Beaumont. Its French neighbour is called Vieux-Reng. On 13 May 1794, the village was the site of the Battle of Grandreng when Franz Wenzel, Graf von Kaunitz-Rietberg's Austrian army defeated a French army under Louis Charbonnier.

The Battle of Grand-Reng or Battle of Rouvroi (13 May 1794) saw a Republican French army jointly commanded by Louis Charbonnier and Jacques Desjardin attempt to advance across the Sambre River against a combined Habsburg Austrian and Dutch army under Franz Wenzel, Graf von Kaunitz-Rietberg. After winning crossings over the Sambre at Thuin and Lobbes on the 10th and Merbes-le-Château on the 12th, the French were defeated on 13 May at Grand-Reng and forced to retreat. The War of the First Coalition engagement marked the first of five attempts by the French armies to establish themselves on the north bank of the Sambre. Grand-Reng is now part of the village of Erquelinnes, Belgium, lying close to the border with France. Rouveroy (Rouvroi) is situated 3.8 kilometres (2.4 mi) north. Grand-Reng is located about 33 kilometres (21 mi) southwest of Charleroi. The spring of 1794 saw intense and continual fighting in the Austrian Netherlands between the French and First Coalition armies. While the Coalition army concentrated their main effort in the center against Landrecies, the French directed their efforts against the flanks. On the eastern flank, the small Army of the Ardennes under Charbonnier joined with three Army of the North divisions led by Desjardin to threaten Mons. The two French forces failed to cooperate effectively; Desjardin's troops did all the fighting while Charbonnier's soldiers sat idle nearby. After the defeat at Grand-Reng, the French unsuccessfully tried to breach the Coalition defenses at Erquelinnes between 20 and 24 May. The French would make three additional attempts to cross the Sambre at Gosselies on 3 June and Lambusart on 16 June before emerging victorious in the pivotal Battle of Fleurus on 26 June 1794.

Vieux-Reng (French pronunciation: [vjø ʁɑ̃]) is a commune in the Nord department in northern France.Its neighbouring village across the border with Belgium is called Grand-Reng.

Cerfontaine (French pronunciation: [sɛʁfɔ̃tɛn]) is a commune of the Nord department in northern France.

Croix-lez-Rouveroy (Picard: Èl Crwè) is a village of Wallonia and a district of the municipality of Estinnes, located in the province of Hainaut.