The manner in which Washington was received by Lord Loudoun on arriving in Philadelphia, showed him at once, that his long, explanatory letter had produced the desired effect, and that his character and conduct were justly appreciated. During his sojourn in Philadelphia he was frequently consulted on points of frontier service, and his advice was generally adopted. On one point it failed. He advised that an attack should be made on Fort Duquesne, simultaneous with the attempts on Canada. At such time a great part of the garrison would be drawn away to aid in the defence of that province, and a blow might be struck more likely to insure the peace and safety of the southern frontier, than all its forts and defences. Lord Loudoun, however, was not to be convinced, or at least persuaded. According to his plan, the middle and southern provinces were to maintain a merely defensive warfare; and as Virginia would be required to send four hundred of her troops to the aid of South Carolina, she would, in fact, be left weaker than before. Washington was also disappointed a second time, in the hope of having his regiment placed on the same footing as the regular army, and of obtaining a king's commission; the latter he was destined never to hold. His representations with respect to Fort Cumberland had the desired effect in counteracting the mischievous intermeddling of Dinwiddie. The Virginia troops and stores were ordered to be again removed to Fort Loudoun, at Winchester, which once more became head-quarters, while Fort Cumberland was left to be occupied by a Maryland garrison. Washington was instructed, likewise, to correspond and co-operate, in military affairs, with Colonel Stanwix, who was stationed on the Pennsylvania frontier, with five hundred men from the Royal American regiment, and to whom he would be, in some measure, subordinate. This proved a correspondence of friendship, as well as duty; Colonel Stanwix being a gentleman of high moral worth, as well as great ability in military affairs. The great plan of operations at the north was again doomed to failure. The reduction of Crown Point, on Lake Champlain, which had long been meditated, was laid aside, and the capture of Louisburg substituted, as an acquisition of far greater importance. This was a place of great consequence, situated on the isle of Cape Breton, and strongly fortified. It commanded the fisheries of Newfoundland, overawed New England, and was a main bulwark to Acadia. In the course of July, Lord Loudoun set sail for Halifax with all the troops he could collect, amounting to about six thousand men, to join with Admiral Holbourne, who had just arrived at that port with eleven ships of the line, a fire-ship, bomb-ketch, and fleet of transports, having on board six thousand men. With this united force Lord Loudoun anticipated the certain capture of Louisburg.