Now besides Col. William Downman it seems there was a Col. Raleigh Downman, and I can't tell which one was at Camden:
Pension application of Joseph Dameron S8310 Transcribed by Will Graves:
Some time in fall of the year 1780 and this Declarant thinks perhaps in the month of September, he entered the Service of the United States as a soldier, he being drafted and entered in the Company commanded by Captain Mumford of the militia of the County of Amelia in the State of Virginia in the a Regiment or Company commanded by Colonel William Downman, and from the said County of Amelia
Gwathmey, J. H. Historical Register of Virginians in the Revolution, 1938
Downman, Raleigh, Lieut. Colonel, Mil. in 1780, E. Also Rawleigh.
Rawleigh Downman: BLWt 1917-300
This application for bounty land by an heir of Rawleigh (Raleigh) Downman says he was a Continental rather than Militia Lt. Col., so I am now inclined to think that the Col. Downman at the Battle of Camden was William. ...