 Doughty was designated major commandant of the Battalion of Artillery in September 1789, and then was dispatched by President Washington to the frontier to negotiate with the Choctaw Nation for trading post sites in 1789.He was repelled with serious losses when attacked by Cherokee, Shawnee, and Muscogee people, while leading a detachment up the Tennessee River on a negotiating mission to the Chickasaw Nation in 1790.In March 1791 Doughty was offered the position of lieutenant colonel commandant (i.e.