The work before him demanded all his courage. How to invest the city, or even bring the army of Montcalm to action, was a problem which might have perplexed a Hannibal. A French fleet lay in the river above, and the precipices along the northern bank were guarded at every accessible point by sentinels and outposts. Wolfe would have crossed the Montmorenci by its upper ford, and attacked the French army on its left and rear; but the plan was thwarted by the nature of the ground and the vigilance of his adversaries. Thus baffled at every other point, he formed the bold design of storming Montcalm’s position in front; and on the afternoon of the thirty-first of July, a strong body of troops was embarked in boats, and, covered by a furious cannonade from the English ships and batteries, landed on the beach just above the mouth of the Montmorenci. The grenadiers and Royal Americans were the first on shore, and their ill-timed impetuosity proved the ruin of the plan. Without waiting to receive their orders or form their ranks, they ran, pell-mell, across the level ground, and with loud shouts began, each man for himself, to scale the heights which rose in front, crested with intrenchments and bristling with hostile arms. The French at the top threw volley after volley among the hot-headed assailants. The slopes were soon covered with the fallen; and at that instant a storm, which had long been threatening, burst with sudden fury, drenched the combatants on both sides with a deluge of rain, extinguished for a moment the fire of the French, and at the same time made the steeps so slippery that the grenadiers fell repeatedly in their vain attempts to climb. Night was coming on with double darkness. The retreat was sounded, and, as the English re-embarked, troops of Indians came whooping down the heights, and hovered about their rear, to murder the stragglers and the wounded; while exulting cries of _Vive le roi_, from the crowded summits, proclaimed the triumph of the enemy. With bitter agony of mind, Wolfe beheld the headlong folly of his men, and saw more than four hundred of the flower of his army fall a useless sacrifice.[125] The anxieties of the siege had told severely upon his slender constitution; and not long after this disaster, he felt the first symptoms of a fever, which soon confined him to his couch. Still his mind never wavered from its purpose; and it was while lying helpless in the chamber of a Canadian house, where he had fixed his headquarters, that he embraced the plan of the enterprise which robbed him of life, and gave him immortal fame.