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
Siege of Fort Wayne joined by 800 men of the Ohio militia under Colonel Adams and Colonel Hawkins at Shane's Crossing. On 11 September, Winamac attempted one last attack on Fort Wayne, and suffered severe casualties. Suddenly, on 12 September, the attack was broken off, and Winamac's forces crossed the Maumee River and disappeared into the woods. Harrison's relief army marched towards the fort, uncontested by Winamac. The Potawatami/Miami force retreated into Ohio and Michigan Territory. The siege of Fort Wayne prompted Harrison to order punitive expeditions against the Miami which culminated in the Battle of the Mississinewa in December, 1812. Influential Miami Chief