Independent Companies Cavalry
Brigadier General P G T Beauregard
Black Horse Troop: Capt. W H Payne – The company was assigned as Company H, 4th Virginia Cavalry, September 1861.
Assignment – Third Squadron Cavalry, Fisrt Brigade, Army of the Potomac
Chesterfield Light Dragoons: Capt. W B Ball – The company was assigned as Company B, 4th Virginia Cavalry, September 1861.
Assignment – Third Squadron Cavalry, Fisrt Brigade, Army of the Potomac
Fairfax Cavalry: Capt. E B Powell – The company was assigned as Company F, 6th Virginia Cavalry, September 1861.
Assignment – First Squadron Cavalry, Fisrt Brigade, Army of the Potomac
Hanover Light Dragoons: Capt. W C Wickham – Commanding squadron cavalry. The company was assigned as Company G, 4th Virginia Cavalry, September 1861.
Assignment – First Squadron Cavalry, Fisrt Brigade, Army of the Potomac
Little Fork Rangers: Capt. R E Utterback – The company was assigned as Company D, 4th Virginia Cavalry, September 1861.
Assignment – Squadron Cavalry, Brigadier General P G T Beauregard's headquarters as guides and couriers for the command
Loudoun Cavalry: Capt. W W Mead – The company was assigned as Company K, 6th Virginia Cavalry, September 1861.
Assignment – First Squadron Cavalry, Fifth Brigade, Army of the Potomac
Madison Cavalry: Capt. W Thomas – The company was assigned as Company C, 4th Virginia Cavalry, September 1861.
Assignment – No records or documentation of brigade assignment
Powhatan Troop: Capt. J F Lay – Commanding squadron cavalry. The company was assigned as Company E, 4th Virginia Cavalry, September 1861.
Assignment – Squadron Cavalry, Brigadier General P G T Beauregard's headquarters as guides and couriers for the command
Prince William Cavalry: Capt. W. W. Thornton – The company was assigned as Company A, 4th Virginia Cavalry, September 1861.
Assignment – Extreme right guarding Davis' ford. No records or documentation of brigade assignment
Wise Dragoons: Capt. J. A. Adams – The company was assigned as Company H, 6th Virginia Cavalry, September 1861.
Assignment – Squadron Cavalry, Reserve Brigade, Army of the Potomac
Official Report No.123 Capt. J F Lay commanding squadron of cavalry