Read this: The Battle of Saratoga was a turning point in the Revolutionary War. The American defeat of the superior British army lifted patriot morale, furthered the hope for independence, and helped to secure the foreign support needed to win the war.
How it ended
American victory. One of the most decisive American battles of the Revolutionary War, Saratoga ended British general John Burgoyne's attempt to control the Hudson River Valley. The outcome convinced the Court of King Louis XVI that the Americans could hold their own against the British Army, sealing the alliance between America and France. American general Benedict Arnold was hailed as a hero for his bravery on the battlefield, a reputation lost with his later betrayal and defection to the Royalists.
In context
In 1777, British strategy called for a three-pronged attack on New York, with three separate armies converging near Albany. For British general John Burgoyne, moving south from Canada with 7,500 men, the Hudson River Valley became the critical route for the invasion. By August, Burgoyne had captured Fort Ticonderoga, defeated fleeing American troops at Hubbardton (Vermont), and occupied Fort Edward, on the edge of the Hudson River. After a contingent of Burgoyne’s troops was defeated in the Battle of Bennington, his reduced forces marched south toward Saratoga in early September.
General Horatio Gates and his American soldiers had built formidable defenses on Bemis Heights, just south of Saratoga overlooking the Hudson. The two armies engaged in combat at Freeman’s Farm on September 19. While the British held off the Americans, their losses were great. Burgoyne’s battered forces dug trenches and waited for reinforcements, but none came. Burgoyne launched a second, unsuccessful attack on the Americans at Bemis Heights on October 7. With no means of escape, Burgoyne eventually surrendered to Gates on October 17. The victory persuaded France to sign a treaty with the United States against Britain. France’s financial and military support contributed to Washington’s victory at Yorktown in 1781, which effectively ended America’s War for Independence.