Born at Saint-Leger de Foucheret, in the middle of Burgundy, Vauban, who loved and was well acquainted with this beautiful province, had occasion to visit Roche-Pont several times. The situation of the fortress and its strategical position attracted his notice, and suggested a plan connecting this little town with a line starting with Besançon, passing through Dôle, Auxonne, La Roche-Pont, Langres, Neufchâteau, Toul, Pont-à-Mousson, Metz, Thionville, Longwy, Montmédy, Sedan, Mézières, Rocroy, Avesnes, Maubeuge, Valenciennes, Lille, and ending at Dunquerque. The date was 1680; it was a second line. Would to Heaven it had always been maintained by works accommodated to the means of attack! but if the French know how to take, they are but remiss in keeping what they have taken. The fortress of La Roche-Pont was exposed to attack only from the northern plateau, and the artillery of Vauban's time could make a serious impression only on that side, as the town was protected on its two sides, east and west, by escarpments and two water-courses. Batteries placed on the hills east and west were either dominated by the artillery of the town or must have been placed at a distance of eighteen hundred yards--_i.e._, out of range--to attain the level of the ramparts. Vauban decided therefore to construct outside the ancient town a large work on the north, which should command the plateau. At the same time--for he was economical of the money of the state--he thought he might avail himself of part of Errard's works, especially the bastions which that engineer had raised on the east and west fronts, and improve the defence of the castle, which would then become a good stronghold. Besides this he planned works, only revetted at the base, along the river, to protect the lower town. On the rivulet side, in like manner, he planned a flanked front for musketry, to secure that side from approach, and to keep some land useful either for the cultivation of vegetables in case of siege, or for pasturage. A weir placed at the mouth of the rivulet, with a flood gate, allowed the inhabitants to inundate the meadows situated on the east of the escarpment. [Illustration: FIG. 65.--VAUBAN'S DEFENCES.]