Prince Eugene and the duke of Marlborough proceeded to Flanders, and towards the end of June the allied army encamped in the plain of Lisle, to the number of one hundred and ten thousand fighting men. At the same time, the mareschal Villars, accounted the most fortunate general in France, assembled the French forces in the plain of Lens, where he began to throw up intrenchments. The confederate generals having observed his situation, and perceiving he could not be attacked with any probability of success, resolved to undertake the siege of Tournay, the garrison of which Villars had imprudently weakened. Accordingly, they made a feint upon Ypres, in order to deceive the enemy, and convert all their attention to that side, while they suddenly invested Tournay on the twenty-seventh day of June. Though the garrison did not exceed twelve I weakened battalions, and four squadrons of dragoons, the place was so strong, both by art and nature, and lieutenant de Surville, the governor, possessed such admirable talents, that the siege was protracted contrary to the expectation of the allies, and cost them a great number of men, notwithstanding all the precautions that could be taken for the safety of the troops. As the besiegers proceeded by the method of sap, their miners frequently met with those of the enemy under ground, and fought with bayonet and pistol. The volunteers on both sides presented themselves to these subterraneous combats, in the midst of mines and countermines ready primed for explosion. Sometimes they were kindled by accident, and sometimes sprung by design; so that great numbers of those brave men were stifled below, and whole battalions blown into the air, or buried in the rubbish. On the twenty-eighth day of July, the besiegers having effected a practicable breach, and made the necessary dispositions for a general assault, the enemy offered to capitulate: the town was surrendered upon conditions, and the garrison retired to the citadel. Surville likewise entered into a treaty about giving up the citadel: the articles being sent to the court of Versailles, Louis would not ratify them, except upon condition that there should be a general cessation in the Netherlands till the fifth day of September. Hostilities were renewed on the eighth day of August, and prosecuted with uncommon ardour and animosity. On the thirtieth, Surville desired to capitulate on certain articles, which were rejected by the duke of Marlborough, who gave him to understand that he had no terms to expect, but must surrender at discretion. At length, his provisions being quite exhausted, he was obliged io surrender himself and his garrison prisoners of war, though they were permitted to return to France, on giving their parole that they would not act in the field until a like number of the allies should be released.