After some work (didn’t see it mentioned in wikipedia but maybe I missed it) I was able to find this website (of which i cannot vouch for) giving context:

In 1705 Marlborough was obliged to forgo an ambitious attack on the French via the valley of the Moselle, owing to the fact that Prince Eugene had been sent to fight in Italy. He therefore decided on an offensive in the Spanish Netherlands. The French, under Marshal Villeroi, had ranged themselves in a long line from Antwerp to Namur, covering every vulnerable point with fortifications. Marlborough wanted to fight a pitched battle at Waterloo, but the Dutch government withdrew their forces and prevented any decisive engagements. His opportunity came in the spring, however, when he induced Villeroi to concentrate all of the French forces in the Spanish Netherlands to defend the fortress of Namur. The consequent Battle of Ramillies (1706) was a crushing defeat for the French, and resulted in Brussels, Antwerp, Ghent, Bruges, all of Flanders and Hainaut falling into Marlborough’s hands. All that remained to the French in the territory were the fortresses of Mons and Namur.

Yo OP could you do the courtesy of a context-comment pls