Quebec stands on the north side of the St. Lawrence, and on the west of the St. Charles, which rivers unite immediately below the town. It consists of an upper and a lower town; the latter is built upon the strand, which stretches along the base of the lofty rock, on which the former is situated. This rock continues, with a bold and steep front, far to the westward, parallel to, and near the river St. Lawrence. On this side, therefore, the city might well be deemed inaccessible. On the other, it was protected by the river St. Charles, in which were several armed vessels, and floating batteries, deriving additional security from a strong boom drawn across its mouth. The channel of this river is rough and broken, and its borders intersected with ravines. On its left, or eastern bank, was encamped a French army, strongly entrenched, and amounting, according to the English accounts, to ten thousand men.[167] The encampment extended from St. Charles, eastward, to the Montmorency, and its rear was covered by an almost impenetrable wood. To render this army still more formidable, it was commanded by a general, who had given signal proofs of active courage, and consummate prudence. The marquis de Montcalm, who, when strong enough to act offensively, had so rapidly carried Oswego, and fort William Henry, and who, when reduced to the defensive, had driven Abercrombie with such slaughter from the walls of Ticonderoga, was now at the head of the army which covered Quebec, and was an antagonist, in all respects, worthy of Wolfe. [Footnote 167: These accounts must be exaggerated. According to the letter of general Townshend, the force engaged on the Plains of Abraham amounted to three thousand five hundred men; and not more than fifteen hundred are stated to have been detached under Bougainville.] The British general perceived these difficulties in their full extent, but, his ardent mind glowing with military enthusiasm, sought only how to subdue them. He took possession of Point Levi, on the southern side of the St. Lawrence, where he erected several heavy batteries, which opened on the town, but were at too great a distance to make any considerable impression on the works. Nor could his ships be employed in this service. The elevation of the principal fortifications placed them beyond the reach of the guns of the fleet; and the river was so commanded by the batteries on shore, as to render a station near the town ineligible. The English general, sensible of the impracticability of reducing Quebec, unless he should be enabled to erect his batteries on the north side of the St. Lawrence, determined to use his utmost endeavours to bring Montcalm to an engagement. After several unavailing attempts to draw that able officer from his advantageous position, Wolfe resolved to pass the Montmorency, and to attack him in his entrenchments.