 Leaving a detachment to guard the prisoners, the combined Indian and British force of about 500 set off towards Fort Nelson in pursuit of Clark's main army.On September 9, two captured Americans revealed that Clark's expedition had been called off because of a shortage of men.Satisfied that the campaign had been successfully concluded, most of the British-Indian army dispersed, although McKee convinced 200 men to accompany him on a raid into Kentucky, which culminated in what Kentuckians called the "Long Run Massacre".