The Battle of Newtown (August 29, 1779) was the only major battle of the Sullivan Expedition, an armed offensive led by Major General John Sullivan that was ordered by George Washington to end the threat of the Haudenosaunee who had sided with the British in the American Revolutionary War. Opposing Sullivan's four brigades were 250 Loyalist soldiers from Butler's Rangers, commanded by Major John Butler, and 350 Haudenosaunee and Lenape (Delaware). Butler and Mohawk war leader Joseph Brant did not want to make a stand at Newtown, and instead proposed to harass the enemy on the march, but were overruled by Sayenqueraghta and other Indigenous war leaders.
This battle, which was the most significant military engagement of the campaign, took place at the foot of a hill along the Chemung River just outside what is now Elmira, New York.
The engagement occurred along a tall hill, now called Sullivan Hill and part of the Newtown Battlefield State Park. The hillside, running southeast to northwest next to the Chemung River, was a mile long at its crest, which rose 600 feet (180 m) above the path at its base leading into the Delaware village of Newtown. The slope of the hill was covered with pine and a dense growth of shrub oak. Hoffman Hollow, a marshy area of small hillocks and thick stands of trees, was just to the east of the hill. A small watercourse, called Baldwin Creek, ran through the hollow and emptied into the Chemung River (referred to as the Cayuga branch in Sullivan's reports). The creek followed the hill northwest on the opposite side from the river and had steep western banks.
In May 1779, in response to rumours of a planned American invasion of Haudenosaunee territory, Butler, accompanied by five companies of Butler's Rangers and a detachment of the 8th Regiment of Foot, left Fort Niagara and established a forward operating base at Kanadaseaga located near the northern end of Seneca Lake. In the middle of August, Butler accompanied by about 300 Seneca and Cayuga warriors led by Sayenqueraghta, Cornplanter, and Fish Carrier moved south to the Chemung River where they were joined by Joseph Brant and Brant's Volunteers, as well as a number of Delaware.
Butler and Brant suggested that, because of the size and composition of Sullivan's forces, harassment raids would be more effective than making a stand. They were overruled by Sayenqueraghta, Cornplanter and the Delaware who selected a position on the north side of the Chemung River for an ambush.
The Rangers and their native allies hastily constructed a horseshoe-shaped camouflaged breastwork of logs about 150 feet (46 m) up the southeast spur of the hill, within musket range of the path. The hill was used as both an observation point and a barrier to the approach of the Continental Army.
The American Revolutionary War (1775–1783) grew from colonial resistance to British taxation without parliamentary representation — a dispute that radicalized through the Stamp Act (1765), the Townshend Acts (1767), and the Boston Massacre (1770). Fighting began at Lexington and Concord in April 1775; the Continental Congress declared independence on July 4, 1776. The Continental Army under George Washington faced severe shortages of supplies and troops, enduring the brutal winter at Valley Forge (1777–1778) before French alliance and French financing turned the military balance. Major engagements included Bunker Hill (1775), Trenton (1776), Saratoga (1777) — which secured French intervention — and Yorktown (1781), where British General Cornwallis surrendered to Washington. An estimated 25,000 American soldiers died in service, from combat, disease, and captivity. The Treaty of Paris (1783) recognized American independence and ceded British territory east of the Mississippi, though it left unresolved questions about Indigenous land rights and the status of Loyalists.
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