While the siege of Boston was in progress, the Americans fixed upon a plan for the invasion of Canada. The mistake, which has been repeated more than once, was in believing that the Canadians, if given the opportunity, would make common cause against Great Britain. General Philip Schuyler was placed in command of the expedition, but fell ill, and Richard Montgomery, the second in command, took charge. He was a valiant Irishman, who had done brilliant service in the British army, and was full of ardor for the American cause. In several unimportant skirmishes, his men were so insubordinate and cowardly that he was disgusted, and expressed his regret that he had ever taken command of such a lot of troops. Nevertheless, he pressed on from Ticonderoga, while Schuyler at Albany used every effort to forward him supplies. St. John was invested, and the impetuous Ethan Allen, one of his officers, hastened to Chambly to raise a force of Canadians. He recruited nearly a hundred, and, being joined by a few Americans, set out to capture Montreal. The promised reinforcements did not reach him, and, being attacked by a powerful force, he made the best defense he could, but was finally compelled to surrender, with all of his men who had not escaped. Allen was sent to England, where he was held a prisoner for a long time. The British fort at Chambly was besieged, and surrendered October 18th. With its capture, the Americans secured six tons of powder and seventeen cannon. The fort of St. John was captured November 3d. By that time, Carleton, the British commander, was so alarmed that he abandoned Montreal, which surrendered on the 20th. Taking possession, Montgomery issued a proclamation, urging the Canadians to unite with the colonies in the war for independence, and to elect representatives to the Continental Congress. Benedict Arnold, at the head of eleven hundred men, had withdrawn from the camp before Boston, September 13th, and was pressing forward to join Montgomery. His course was up the Kennebec, through the gloomy wilderness to the Chaudiere, down which he passed to Point Levi. The journey was of the most trying nature. The weather became bitterly cold, and the stream was too swift at times for them to make headway against it, except by wading the chilly current and slowly dragging the boats against it. At other places, even this was impossible, and the heavy boats had to be laboriously carried around the falls and rapids.