Fort Pitt Museum Pitt, after William Pitt the Elder. As a result, in 1763 local Delawares and Shawnees took part in Pontiac's Rebellion, an effort to drive the British out of their territory. The Indians' siege of Fort Pitt began on June 22, 1763, but the fort was too strong to be taken by force. In negotiations during the siege, the commander of Fort Pitt gave two Delaware emissaries blankets that had been exposed to smallpox, in hopes of infecting the surrounding Indians and ending the siege. The effectiveness of this attempt is unclear. Outbreaks of smallpox had plagued Native Americans for years
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