Siege of Fort Pitt Siege of Fort Pitt The Siege of Fort Pitt took place during June and July 1763 in what is now the city of Pittsburgh, Pennsylvania, United States. The siege was a part of Pontiac's War, an effort by Native Americans to remove the British from the Ohio Country and Allegheny Plateau after they refused to honor their promises and treaties to leave voluntarily after the defeat of the French. The Native American efforts of diplomacy, and by siege, to remove the British from Fort Pitt ultimately failed. This event is best known as an early instance of biological warfare, where
Fort Washington (Ohio) city was Kekionga (modern-day Fort Wayne, Indiana). On October 22, 1790, Gen. Harmar's army was ambushed and massacred by Indians led by Chief Little Turtle. The Indians of the Ohio Territory were in open revolt aided by the British. Indian raids came close to Cincinnati, despite the presence of the nearby Fort Washington. In the summer of 1793, Major General Anthony Wayne moved his forces from the training center at Legionville, PA, down the Ohio River by barge to a camp outside Fort Washington that was called Hobson's Choice. In the fall, Wayne departed fort Washington and moved his army