The situation of Namur, at the junction of the Sambre and the Meuse, made it a place of great importance in every war, not only in the Middle Ages, but also in later times. When the Grand Alliance was formed against France, it was in Brabant that the main body of the Allies gathered; but before long the tide of war rolled into the Valley of the Meuse. Liége was bombarded for five days by Marshal Boufflers, and the Bishop, from his place of refuge in the citadel, saw the Hôtel de Ville and half the town set on fire by the shells which flew over the river from the French batteries on the Chartreuse. As the struggle went on, Huy was destroyed by Marshal Villeroi, Namur fell into the hands of Louis XIV., and farther afield it seemed as if no city, however strong, could stand a siege against the genius of Vauban, while the victories at Steinkirk and Landen made the arms of France appear invincible. But at last, in 1695, came the siege and capture of Namur by William III. The taking of Namur was the turning-point of that war, and led to the Treaty of Ryswick, by which Spain recovered Luxembourg, and all the conquests which the King of France had made in the Netherlands. Again, when the War of the Spanish Succession began, the English army, on its way to Germany, marched into the Principality of Liége, took the town and citadel of Liége, drove the French over the Meuse, and carried the war to Blenheim on the Danube. But though the first of Marlborough's chief victories was thus gained in Bavaria, the second of his four great battles was fought to obtain command of the way to Namur. Marshal Villeroi's object in giving battle at Ramillies was to protect that town, which he regarded as the key to the Valley of the Meuse; but fortune had deserted France, and the combat of May 23, 1706, decided the fate not only of the Principality of Liége, but of all Belgium, though the war continued through the carnage of Oudenarde and Malplaquet, till the Peace of Utrecht. Even now the shadow of a possible war overhangs this part of Europe; and if those who think that, sooner or later, the neutrality of Belgium will be violated are right, it is very likely that the line of the Meuse, with its navigable stream, its railway, and its roads, so well adapted for military purposes, will be used. It is in view of this danger that the fortifications along the valley are maintained. Within a radius of six miles round Liége there are twelve forts. The citadel of Huy, planned by William I. soon after the campaign of Waterloo, was enlarged and made stronger so lately as 1892. Namur is surrounded by nine forts at a distance of about six miles from the town; and the citadel of Dinant forms an outpost to the south-west.