Following this first skirmish, General Schuyler became too ill to continue, so he turned command over to Montgomery. Schuyler left for Fort Ticonderoga several days later. After another false start, and the arrival of another 800–1000 men from Connecticut, New Hampshire, and New York, as well as some of the Green Mountain Boys, Montgomery finally began besieging Fort St. Johns on September 17, cutting off its communications with Montreal and capturing supplies intended for the fort. Ethan Allen was captured the following week in the Battle of Longue-Pointe, when, overstepping instructions to merely raise local militia, he attempted to take Montreal with a small force of men. This event resulted in a brief upturn in militia support for the British; but the effects were relatively short-lived, with many deserting again in the following days. After an attempt by General Carleton to relieve the siege failed on October 30, the fort finally surrendered on November 3.