Harrison gathered the scattered militia companies at Fort Knox north of Vincennes. They reached Terre Haute, Indiana where they camped and built Fort Harrison. The month of October was spent constructing the fort, resupplying and training the troops. The Shawnee captured a group of Delaware chiefs traveling to Harrison, who had asked them to act as negotiators; after their release they arrived at the end of October with accounts of various aggressive actions. A guard was shot outside the fort, which Harrison saw as aggressive action and worthy of military retaliation against Prophetstown. He wrote to Eustis: "Nothing now remains but to chastise him and he shall certainly get it.