The Battle of Setauket (August 22, 1777) was a failed attack during the American Revolutionary War on a fortified Loyalist outpost in Setauket, Long Island, New York, by a force of Continental Army troops from Connecticut under the command of Brigadier General Samuel Holden Parsons.
In an attempt to repeat the success of the earlier Meigs Raid against Sag Harbor, Parsons' force crossed Long Island Sound to attack the Loyalist position. Alerted by spies to the planned assault, Lieutenant Colonel Richard Hewlett strongly fortified the local Presbyterian church, surrounding it with a stockade and earthworks. After Hewlett rejected Parsons' demand to surrender, a brief firefight ensued that did no significant damage. Parsons withdrew and returned to Connecticut.
In 1776 the British had qualified success in the American Revolutionary War. After being forced to abandon Boston, they captured New York City, but were unable to hold New Jersey when General George Washington surprised them at Trenton and Princeton. The British consolidated their hold on New York City and Long Island during the winter months of early 1777, while the Continental Army established a land blockade around the city in New Jersey, southern New York, and southwestern Connecticut.
In the spring of 1777 Lieutenant General William Howe launched raiding expeditions against Continental Army and local militia storage depots near the city. A successful raid against Peekskill, New York in March prompted him to organize a more ambitious expedition to raid a depot in Danbury, Connecticut. This expedition, led by William Tryon, the former royal governor of New York, successfully reached Danbury from a landing point in Westport, Connecticut, on April 26, and destroyed provisions and supplies. The Connecticut militia had mobilized, and over the next two days skirmished with the British as they marched back to their ships, most notably on April 27 at Ridgefield. General Samuel Holden Parsons, leading Connecticut's defenses, decided to organize an act of reprisal.
The raid executed with great success by Colonel Return Jonathan Meigs against Sag Harbor on eastern Long Island prompted Parsons to consider further such actions against other Loyalist positions on the island. On August 16, Parsons, whose brigade was stationed at Peekskill, New York, received orders from Major General Israel Putnam authorizing an expedition against Loyalist targets on Long Island. Parsons immediately ordered Colonel Samuel Blachley Webb to muster his regiment, numbering about 500 men, and march to Fairfield, Connecticut. Parsons followed, reaching Fairfield on August 21.
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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