He contributed largely to raise troops in 1777 to meet Burgoyne; and he served as a captain at Bennington and at Saratoga.
Burgoyne fortified himself on the site of the action, and on October 7th made another attempt to turn the American left.
In 1777 General Philip Schuyler established his headquarters on Van Schaick's Island in the Mohawk and Hudson, then the principal rendezvous of the army which later met Burgoyne at Saratoga.
He was sent to Congress to report Gates's success against Burgoyne, but his tardiness secured for him a sarcastic reception.
But on the 6th of February 1778, after the news of the defeat and surrender of Burgoyne had reached Europe, a treaty of alliance and a treaty of amity and commerce between France and the United States were signed at Paris by Franklin, Deane and Lee.