Siege of Fort Detroit had apparently been informed of Pontiac's plan, and the garrison of about 120 men was armed and ready. Pontiac withdrew and, two days later, laid siege to the fort. A number of British soldiers and civilians in the area outside the fort were captured or killed; one of the soldiers was ritually cannibalized, as was the custom in some Great Lakes Indian cultures. The violence was directed only at the British: French colonists were left alone. Eventually more than 900 Indian warriors from a half-dozen tribes joined the siege. On May 28, a supply convoy commanded by Lieutenant Abraham Cuyler
Siege of Fort Stanwix surrendered after the Battle of Bemis Heights (second Saratoga). In an analysis after the surrender, Burgoyne noted that the failure of General William Howe to support him made it possible for Washington to divert resources from the area around New York City to assist both in the relief of Stanwix and at Saratoga. Fort Stanwix itself saw little action after the siege, although it was a dangerous and unpopular posting because of regular harassment by Loyalists and hostile Indians. In the spring of 1779 the Continental Army used the fort as a staging ground for the destruction of Onondaga Castle.