Bougainville, abandoning the island, made a difficult night retreat to St. John's, and from thence fell back with Roquemaure to the St. Lawrence. Haviland was soon opposite Montreal, and in communication with Murray, and both awaited the coming of Amherst's army. This force had assembled at Oswego in July, and numbered something more than 10,000 men, exclusive of about 700 Indians under Sir William Johnson, and had embarked on Lake Ontario on the 10th of August, and within five days reached Oswigatchee. After the capture by five gunboats of a French armed brig that threatened the destruction of the batteaux and whaleboats, the army continued its advance to Fort Levis, near the head of the rapids. Amherst invested the fort, and opened fire upon it from land and water; and when for three days rocky islet and wooded shore had been shaken by the thunder of the cannon that splintered the wooden walls, the French commandant, Pouchot, was compelled to surrender the ruined works and his garrison. Johnson's Indians were so enraged at not being allowed to kill the prisoners that three fourths of them went home.[23] There was no further resistance from the French, but there was yet a terrible enemy to be encountered in the long and dangerous rapids that must be descended. Several were passed with but slight loss; but in the most perilous passage of the last three, forty-seven boats were wrecked, several damaged, some artillery, ammunition, and stores lost, and eighty-four men drowned in the angry turmoil of wild waters. When these perils were past, an uneventful and unopposed voyage ensued, till on the 6th of September the army landed at Lachine, and, marching to the city, encamped before its walls. The defenses of Montreal were too weak to resist a siege; the troops, abandoned by the militia, too few to give battle to the three armies that hemmed them in; and there was nothing left for Vaudreuil but surrender. Some of the terms of capitulation proposed by him were rejected by Amherst, who demanded that "the whole garrison of Montreal and all the French troops in Canada must lay down their arms, and shall not serve again during the war." In answer to the remonstrances of Vaudreuil and his generals he said: "I am fully resolved, for the infamous part the troops of France have acted in exciting the savages to perpetrate the most horrid and unheard-of barbarities in the whole progress of the war, and for other open treacheries and flagrant breaches of faith, to manifest to all the world, by this capitulation, my detestation of such practices."[24] Vaudreuil yielded, as perforce he must, and on the 8th of September signed the capitulation by which Canada passed into the possession of England. The French officers, civil and military, the troops and sailors, were to be sent to France, and the inhabitants were to be protected in their property and religion.