news of the siege arrived in vincennes as colonel william russell was passing through with a company of regular infantry and a company of rangers, on their way to join ninian edwards, governor of illinois territory. colonel russell's companies joined with the local militia and 7th infantry regiment and marched to the relief of fort harrison. over 1000 men arrived from vincennes on september 12, and the indian force departed. the next day, however, a supply train following colonel russell was attacked in what became known as the "attack at the narrows" in modern sullivan county, indiana.