At Saratoga, New York, British General John Burgoyne surrendered his army to American General Horatio Gates, ending an invasion meant to sever New England from the other colonies. The victory, the first major American triumph of the Revolutionary War, convinced France that the rebellion could succeed, leading directly to the Franco-American alliance of 1778 and transforming a colonial rebellion into a global war.
Burgoyne's plan had looked good on a map: march an army south from Canada along the Hudson, link up with British forces from New York City, and cut the rebellious New England colonies off from the rest. It fell apart in the dense, unfamiliar terrain of upstate New York, where American militia and Continental troops under Horatio Gates and the tactically brilliant Benedict Arnold bled his army through two brutal engagements at Bemis Heights.
By mid-October, surrounded and starving, Burgoyne had no options left. On October 17, 1777, nearly 6,000 British and Hessian soldiers laid down their arms, in what remains one of the most consequential surrenders in military history. American troops, under Gates's orders, refused to gloat, standing silently as the defeated marched past — a gesture of magnanimity that impressed European observers.
News of the victory reached Paris in early December, and it was decisive. Benjamin Franklin had been angling for French support for two years; Saratoga finally gave Foreign Minister Vergennes the proof he needed that the Americans were not a lost cause. France's formal alliance, signed in February 1778, brought money, ships, and eventually troops that would prove essential at Yorktown four years later.
Key people: John Burgoyne, Horatio Gates, Benedict Arnold