The first operation was the siege of Louisburg, which surrendered with about five thousand prisoners, and in the capture of which young Wolfe greatly distinguished himself. Later in the year the French were compelled to abandon Fort Duquesne, in the Ohio Valley, which the English now named Pittsburg, in honor of War Minister Pitt; and Frontenac (Kingston), the marine arsenal of the French at the foot of Lake Ontario, surrendered and was destroyed. The effect of these losses was disheartening to the French, though before the season's campaign closed Montcalm defeated the English, under General Abercrombie, in an attack on the French post on Lake Champlain, afterward named Ticonderoga. When the year 1759 opened, the English were ready to resume operations with spirit and effect. Amherst's army advanced upon Crown Point and Ticonderoga, from which the French retired, and Sir William Johnson captured Niagara and drove the French from the Lakes. Wolfe, now general of the forces of the St. Lawrence, sailed in June with his army from Louisburg to Quebec. The story of this eventful expedition and its result here given is by the able pen of the historian A.G. Bradley. When the flag of Britain supplanted the emblem of France on the ramparts of Quebec the city was held by an English garrison under General Murray, and in the spring of 1760 it narrowly escaped recapture by De Levis, at the head of seven thousand men, who had come from Montreal to attack it. The timely arrival of a British fleet saved the now British stronghold, while Montreal was in turn invested, and that post and all Canada surrendered to the British Crown. Three years later the Peace of Paris confirmed the cession of the country to Britain, and closed the dominion of France in Canada.