While Perry and Harrison were thus reclaiming our lost ground on Lake Erie and in the north-west, Armstrong was preparing to carry out his favorite plan of a descent on Kingston and Montreal. When he accepted the post of Secretary of War, he transferred his department from Washington to Sackett's Harbor, so that he might superintend in person the progress of the campaign. In April previous, the United States had been divided into nine military districts, that portion of New York State north of the Highlands and Vermont, constituting the ninth.[41] Although Wilkinson had superseded Dearborn, as commander-in-chief of this district in July, he did not issue his first orders to the army till the 23d of August. Three days after a council of war was held at Sackett's Harbor, in which it was estimated that by the 20th of September the army would consist of nine thousand men, exclusive of militia. The garrisons at Forts George, Niagara, Oswego and Burlington, were therefore ordered to rendezvous at Grenadier Island, near Sackett's Harbor. General Wade Hampton, who had been recalled from the fifth military district to the northern frontier, encamped with his army, four thousand strong, at Plattsburg, on Lake Champlain. The plan finally adopted by the Secretary was, to have Wilkinson drop down the St. Lawrence, and without stopping to attack the English posts on the river, form a junction with General Hampton, when the two armies should march at once on Montreal. These two Generals were both Revolutionary officers, and consequently too advanced in years to carry such an expedition through with vigor and activity. Besides, a hostile feeling separated them, rendering each jealous of the other's command, which threatened to work the most serious mischief. Armstrong, however, being the friend of both, thought by acting himself as commander-in-chief, he could reconcile their differences, sufficiently to insure harmony of action. Chauncey, in the mean time, after an action with Yeo, in which both parties claimed the victory, forced his adversary to take refuge in Burlington Bay. [Sidenote: Sept. 28.] He then wrote to Wilkinson that the lake was clear of the enemy, and reported himself ready to transport the troops down the St. Lawrence. [Footnote 41: Massachusetts and New Hampshire constituted the first; Rhode Island and Connecticut the second; New York, south of the Highlands, and a part of New Jersey, the third; the remaining section of New Jersey, with Pennsylvania and Delaware, the fourth; Virginia, south of the Rappahannock, the fifth; Georgia and the two Carolinas, the sixth; Louisiana, Mississippi and Tennessee, the seventh; Kentucky, Ohio, Indiana, Michigan, Illinois and Missouri, the eighth. A tenth was erected during the summer, including Maryland, the District of Columbia, and that portion of Virginia lying between the Potomac and Rappahannock rivers.]