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 by the British after the French surrendered Montreal in 1760 during the French and Indian War (part of the Seven Years' War). The British held it until the American Revolutionary War, and it was taken over by the United States afterward. They built Fort Lernoult to the north along the river in 1779. This was later renamed as Fort Shelby and was abandoned by the US military in the 1820s. The city of Detroit demolished Fort Shelby in 1827. Cadillac ordered Fort Detroit built on the west side of the Detroit River in an effort to prevent British colonists from