Лэнгли
McClellan came to Dranesville to consult with McCall that same evening and ordered McCall to return to his main camp at Langley, Virginia, the following morning. However, McCall requested additional time to complete some mapping of the roads in the area and, as a result, did not actually leave for Langley until the morning of October 21, just as the fighting at Ball's Bluff was heating up.