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-Louis (1793) and two squadrons of the "Szekler" Hussar Regiment. Siege of Fort-Louis (1793) The Siege of Fort-Louis (14 October – 14 November 1793) saw a force composed of Habsburg Austrians, Hessians and Bavarians led by Franz von Lauer lay siege to Fort-Louis which was held by a Republican French garrison under Michel Durand. The French capitulated after a defense lasting exactly one month. The siege occurred during the War of the First Coalition, part of the French Revolutionary Wars. In 1793 the fortress was sited on an island in the Rhine River, but today Fort-Louis is a village in the Bas-Rhin