Marshal Vauban is a historically significant figure who is, in truth, little known. An engineer and military officer, he quickly gained a reputation for capturing the cities besieged by King Louis XIV during summer campaigns. In winter, as an architect, he fortified the cities and citadels of the kingdom to make them impregnable. Taking advantage of these travels during his fifty years of service, Vauban was the only one to have a vision of France and its transformations during the reign of Louis XIV.