After the outbreak of war with the French republic in 1793, he distinguished himself in the struggle against the revolutionary army under Dumouriez by the capture of Landrecies and the relief of Charleroi.
Charleroi was settled in 1890 and was incorporated in 1891.
The French army under Louis in person started from Charleroi and marched down the Meuse unopposed.
A war of manoeuvre on the middle Rhine ended in favour of the French, and the allies then turned against the territories of Cologne and Munster, while William, disappointed in his hopes of joining forces with his friends, made a bold, but in the end unsuccessful, raid on Charleroi (September-December 1672).
Louis' own army, originally collected for the relief of Charleroi in December, advanced on Maastricht, and after a brief siege, in which Vauban directed the besiegers, captured this most important fortress (June 29th, 1673).