Respected and courted by the outer world, they strengthened their position internally by a close union of the Confederates and the Graubünden. The Empire was deprived for ever of a number of its most valuable subjects,[63] and the House of Hapsburg was finally excluded from the cradle of its greatness. No one reaped fuller advantage from the Swiss war than Louis XII. While all the energies of Maximilian were devoted to coping with the Confederates, he found himself free to carry into execution his projected invasion of the Milanese. Had the Emperor proved successful, Ludovico might perhaps have saved himself (or at least prolonged the struggle) by entering the Swabian League; but with the defeat of Dornach the usurper's fate was sealed. Louis XII., who had already allied himself with the Pope and Venice, winning the support of the latter by the promise of Cremona, crossed the Alps at the end of July with an army {48} of 22,000 men, and entered Milan almost unopposed. Ludovico, deserted and betrayed by his people, sought refuge in Tyrol, and was among the first to bring the tidings of his own misfortunes to his Imperial nephew. But though received with the utmost sympathy and respect by Maximilian, he soon perceived that the latter was as usual at the end of his resources, and that no assistance need be looked for from him. He purchased the services of 8,000 Swiss mercenaries and of the celebrated Burgundian guard, and with their aid recovered his capital and most of its territory. But the army which Louis XII. despatched to the assistance of Bayard consisted largely of Swiss troops; and Ludovico's mercenaries, refusing to fight against their countrymen in the French service, renounced his cause and betrayed him to the enemy. (April 10, 1500). In this undignified way one of the chief disturbers of the peace of Italy bids a last farewell to the field of politics; he remained in the most rigorous confinement at Loches for the next five years, after which the earnest intercession of Maximilian secured some relaxation in his treatment. He was allowed a space of several leagues around his prison for hunting and other amusements, and died in captivity in 1510.