The best illustrations of his principles of fortification occur at Lille, Strasbourg, Landau, Givet, and Neuf-Brisack.

His writings on mines, and the attack and defence of places, are, by the profession, regarded as classic.

His improvements in the existing method of attack gave great superiority to the arms of his countrymen, and even enabled him to besiege and capture his rival Coehorn, in his own works.

He died in 1707, and was soon succeeded by Cormontaigne.
The latter did not attempt the introduction of any new system, but limited himself to improving and perfecting the plans of his illustrious predecessors.

His improvements, however, were both extensive and judicious, and are sufficient to entitle him to the place he holds as one of the ablest military engineers the world has ever produced.