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 the gate and asked if they were meeting for peace or war. Winamac replied "I don't know what to tell you, but you know that Fort Mackinac is taken, Detroit is in the hands of the British, Fort Dearborn has been taken, and you must expect to fall next, probably in a few days." Morning 5 September, the siege began when Chief Winamac's forces attacked two soldiers returning from an outhouse. The Native Americans assaulted the fort from the east side and burned the homes of the surrounding village. The Indians constructed two wooden cannons and were able to trick