When the Seven Years' War spread to New France, King Louis XV sent Brigadier General Montcalm to the colonies as Commander-in-Chief, with Colonel
Chevalier de Levis now as his second-in-command and Capitaine
Louis Antoine de Bougainville as his new aide-de-camp.
Battle of Fort Oswego Upon Montcalm's arrival in
Montreal, he was immediately apprised of the situation along the border with British North America. Concerned by the number of British troops amassing near the border, Montcalm left to visit
Fort Carillon to inspect the defenses while the governor general,
Pierre de Rigaud, Marquis de Vaudreuil-Cavagnial, began to prepare troops at
Fort Frontenac for a potential assault on
Oswego, a British fort across
Lake Ontario. Montcalm's assemblage of troops at Fort Carillon distracted the attention of the British, and upon receiving positive reports from scouts, Vaudreuil and Montcalm decided to make an approach and try to take the fort. When Montcalm returned to Fort Frontenac, he found a force of 3,500 men assembled, being regular French troops,
Canadian militia, and Native Americans. On August 9, the forces crossed the lake and rapidly besieged the British fort. By the morning of August 13, the French had set up nine cannons and began to fire towards the fort while reinforcements surrounded the opposite side. The British commander was killed during the offensive, and the fort was quickly surrendered soon thereafter. Upwards of 100 prisoners were massacred in the wake of the surrender by Montcalm's Indian allies. Montcalm's first victory in North America came relatively quickly and easily, and signified to the British that the French now had a capable general heading their army. Despite the victory, Montcalm held reservations concerning the offensive strategy employed by Vaudreuil, and questioned the military value of the Canadian militias. This marked the beginning of the increasingly antagonistic relationship between Vaudreuil and Montcalm, which would prove to be crucial later on.
Battle of Fort William Henry The following year, Montcalm achieved his greatest military success to date with the taking of
Fort William Henry. Vaudreuil drew up plans for Montcalm that ordered him to march south and take the British bases south of
Lake Champlain, Fort William Henry and
Fort Edward a few miles further south. From Fort Carillon, Montcalm and a force of 6,200 regulars and militia, along with 1,800 natives set upon Fort William Henry on 3 August 1757. Montcalm decided not to advance on to Fort Edward despite the demoralization of the British forces and the proximity of the fort, claiming the road was too bad for his heavy guns and that the garrison would be reinforced before they arrived. This decision infuriated Vaudreuil, furthering the deterioration of their relationship.
Louis XV therefore ordered the colony to reduce its defensive perimeter to the valley of the
Saint Lawrence River, evacuating all forts in Ohio along with those around
Lake Ontario and
Lake Champlain. The French
Minister of War nonetheless expressed his full support to Montcalm, confident that despite the odds, he would find a way to frustrate the enemy's plans, as he had done at
Fort Carillon. This news, along with the threat of impending attack by the British, crushed Montcalm's spirit, who had lost all hope of holding the city in case of a siege.
Wolfe's forces reached Quebec in late June, 1759, and taking position on the opposite shore, started bombarding the city on July 12, reducing the city to rubble over the course of two months. Montcalm, on many occasions, managed to repel attempted landings by the British forces, most notably at the
Battle of Beauport, on 31 July 1759. After spending the month of August ravaging the countryside, In a decision largely considered to be Montcalm's greatest mistake, the general decided to attack the British with what forces he had rather than wait for the forces garrisoned along the shore to come and bolster his numbers. The marquis believed that if he allowed the British to fortify their position, he would not be able to defeat them, and the attack therefore could not wait. In the ensuing
Battle of the Plains of Abraham, the French forces were defeated. ==Death and burial==