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 Detroit the war and ceded the area to the United States. Some accounts say that only Fort Lernoult survived the 1805 fire that destroyed most of Detroit. It appears that no part of the original Fort Detroit remained after this time. Fort Lernoult was officially renamed as Fort Detroit in 1805, then renamed Fort Shelby in 1813. Soon after its use by the military ended, the fort was demolished by the City of Detroit in 1827. The second Hotel Pontchartrain, now named the Crowne Plaza Detroit Downtown Riverfront, is located on the former site of the fort. The Michigan Historic Marker