The Canal des Ardennes (Ardennes Canal) is a summit level canal built to the Freycinet gauge between the river valleys of the Aisne and the Meuse.
Bouvier des Ardennes is a rare dog breed from Belgium.
 Originating in the Ardennes region these dogs were used to herd cattle.
 The loss of farms in the area led to serious decline in the numbers of these dogs until 1985 when some breeders found a few dogs and used the original breed standard as their guide in re-introducing the dog.
The École royale du génie de Mézières ("Royal Engineering School of Mézières") was a military engineering school in what is now Charleville-Mezieres, France.
 It was founded in 1748 on a proposal by the comte d'Argenson, secretary of state for war, and secrétaire d'État à la Guerre et de Nicolas de Chastillon, commander of the citadel at Charleville-Mézières, with the aim of modernizing the town's fortifications.
 It trained 542 military engineers in total.
 Since 1800 its buildings have housed the Hôtel du Département des Ardennes, which manages the Ardennes department.
The Flanders Campaign (or Campaign in the Low Countries) was conducted from 6 November 1792 to 7 June 1795 during the first years of the French Revolutionary Wars.
 A coalition of states mobilised military forces along all the French frontiers, with the intention to invade Revolutionary France and end the French First Republic.
 The largest of these forces assembled on the Franco-Flemish border.
 In this theatre a combined army of Anglo-Hanoverian, Dutch, Hessian, Imperial Austrian and, south of the river Sambre, Prussian troops faced the Republican Armée du Nord, and (further to the south) two smaller forces, the Armée des Ardennes and the Armée de la Moselle.
 The Allies enjoyed several early victories, but were unable to advance beyond the French border fortresses and were eventually forced to withdraw by a series of French counter-offensives.
The French Spaniel (Epagneul Français) is a breed of dog of the Spaniel-like setter.
 It was developed in France and Canada as a hunting dog, descended from dogs of the 14th century.
 Popular with royalty during the Middle Ages, it nearly became extinct by the turn of the 20th century but was saved by the efforts of Father Fournier, a French priest.
 One of the largest breeds of Spaniel, it typically has a white coat with brown markings.
 It is a friendly breed that has few health issues, but can be affected by a syndrome called acral mutilation and analgesia.
 The breed is recognised by Canadian and international kennel clubs but not by The Kennel Club (UK).
 The American Kennel Club has included the breed in its Foundation Stock Service, the first step to full recognition.
William de la Marck (1446–1485) was an adventurer of German extraction.
 He became an important character in the late 15th century in the Prince-Bishopric of Liège.
 William's was nicknamed "Le Sanglier des Ardennes" (The Wild Boar of the Ardennes)— because he was as fierce as the wild boar which he delighted to hunt.
The Army of the Ardennes ("armée des Ardennes") was a French Revolutionary Army formed in 1792 by splitting off the right wing of the Army of the North, commanded from July to August that year by La Fayette.
 From July to September 1792 General Dumouriez also misused the name Army of the Ardennes for the right wing of what was left of the Army of the North after the split, encamped at Sedan.
The Bar is a river in the Ardennes department, northern France, left tributary of the river Meuse.
 Its source is near Buzancy, in the southern part of the Ardennes department.
 It flows through Brieulles-sur-Bar, Tannay, Chémery-sur-Bar and Cheveuges.
 It flows into the Meuse in Vrigne-Meuse, west of Sedan.
 For much of its length the river flows parallel to the Canal des Ardennes.
Circuit des Ardennes is a French cycling road race held annually in the month of April in Charleville-Mézières and the surrounding mountainous region of the Ardennes.
 It is rated 2.2 on UCI Europe Tour.
Roger Marche (March 5, 1924 – November 1, 1997) was a French football (soccer) defender.
 He was part of the French national team during the 1954 and 1958 World Cup tournaments.
 He was nicknamed "Le Sanglier des Ardennes" ("the Boaer of the Ardenne") for the region from which he came.

Question: What animal does Bouvier des Ardennes and French Spaniel have in common?
Answer: dog