Its armies arrived in November 1775} on the south shore of the St. Lawrence River, opposite the city of Quebec (city). The considerable difficulties encountered by this expedition helped the English to rout the Americans before the walls of Quebec on the night of 30 to December 31, 1775. Transferred to Montreal, previously occupied by Montgomery, in April 1776, General Arnold must evacuate the city and return to the United States in June in the face of growing hostility from the Canadians and the arrival of British reinforcements. Arnold became commanding officer of West Point after the victory of Saratoga (1777) against Burgoyne. General Arnold is then at the heart of a plot and he is accused of treason to the American cause; he then fled to London where he died in 1801. Arnold is considered, after George Washington, as the best American general of that time.