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 Henry (1777) of Virginia and Pennsylvania that Indians living in the Ohio Country were planning attacks on frontier settlements on and around the Ohio River. Fort Henry, which had been constructed in 1774 to protect the settlers in the area around what is now Wheeling, West Virginia, was one of the rumored targets. In early August, General Edward Hand, the commander at nearby Fort Pitt warned Lieutenant David Shepherd and all of the local militia captains of the threat, ordering them to gather at Fort Henry. For a time thereafter, militia companies stayed at Fort Henry, improving its defenses and patrolling for