It was the only major battle of the Sullivan Expedition, an armed offensive led by General John Sullivan that was ordered by the Continental Congress to end the threat of the Iroquois who had sided with the British in the American Revolutionary War. In the battle, the Iroquois were defeated decisively. A portion of the battlefield is today managed as a 372-acre (1.51 km2) state park.[3] The entire battlefield (about 2,100 acres (850 ha)) was declared a National Historic Landmark in 1965.[2][4]