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.