In its attack on Fort Chouaguen (Oswego), the French army deployed a large number of troops, including several regiments that arrived in Québec during the spring of 1756. More than 3,000 men, under the command of the Lieutenant-General of the armed forces in New France, Louis-Joseph de Montcalm, his second-in-command, François-Gaston de Lévis, and the Governor General, Pierre de Rigaud de Vaudreuil, were involved in the assault against this English fort, on the southern shore of Lake Ontario. The French tried for 30 years to destroy this trading post, which interfered with their exchanges with the Aboriginal peoples. Two months of preparation and two days of siege resulted in the fall of Fort Chouaguen and the capture of its munitions and food supplies. The English commander James Mercer and 150 of his men were killed; 1,700 were taken prisoner.