Against a Canadian population of less than seventy thousand, the English colonies could count more than a million souls; and although they lacked cohesion, and, indeed, regular military establishment of any kind, their greater wealth and numbers fore-told the inevitable result of the struggle. At first the tide of war set against the English: an event to be expected with Newcastle guiding the ship of state, and believing in his generals, Loudon, Webb, and Abercrombie, vain and obtuse military martinets, who fumbled their opportunities, mismanaged their campaigns, and learned no lessons from their failures. From Oswego, on the south-east corner of Lake Ontario, the English had planned to attack Fort Frontenac and Fort Niagara, so cutting off New France from her western outposts. But Montcalm, with the speed and energy that marked his character, determined to act upon the offensive. With three thousand men he hurried to Fort Frontenac, and crossed the lake under cover of the night. In the morning the garrison of Oswego found themselves besieged. The cannonade on both sides was brief but vigorous; but the French fought with greater spirit, their dash and resource were disconcerting, and presently this, the most important English stronghold of the west, was compelled to capitulate. Sixteen hundred prisoners, a hundred pieces of artillery, and a vast quantity of stores and ammunition fell into the hands of the triumphant French. Having thus secured the west, Montcalm hurried back to Lake Champlain, and intrenched himself at Carillon, by this means to prevent an invasion of Canada by way of the Richelieu. Owing to the lateness of the season, however, his opponents undertook no new expedition that year, and waited for the spring. In 1757 Loudon conceived the idea of attacking Louisbourg, and accordingly he withdrew his troops to Halifax in order to co-operate with an English squadron under Admiral Holbourne. Loudon's incompetency alone would have fore-doomed so hazardous an undertaking; but once more the elements fought on the side of France, and Holbourne's fleet was shattered by a storm. So far Montcalm had maintained a defensive attitude in the Richelieu valley, but taking advantage of Loudon's diversion towards Louisbourg, he now resolved upon attacking Fort William Henry, strongly held by over two thousand English troops. Moving out of his intrenchments at Carillon, therefore, and supported by Lévis and Bougainville, he advanced up the valley with six thousand soldiers and over a thousand Indians. Monro, the British commandant, sharply rejected the summons to surrender, and Montcalm began the investment of the fort.