 Eventually a small town grew around the fort on top of Killmule Hill.In Carl Barks' story "The Day Duckburg Got Dyed" (1957), it is revealed that Cornelius Coot at some point in Duckburg's history managed to pipe mountain water into the town.During the American Civil War, a decisive battle was fought on top of an unnamed hill in Duckburg, led by the Duckburgian General Stonewall Duck.