|September 12||Organized at Manassas with seven companies under the command of Colonel Charles W. Field (West Point Class of 1849), Lieutenant Colonel Julien Harrison and Major John G. Cabell.|
|September 31||Company C was created.|
|October 9||Company D was transferred from Company D of the 6th Virginia Cavalry.|
|November||Completed organization and was assigned to Cavalry Brigade, Potomac District, Department of Northern Virginia|
|December 4||Burke’s Station|
|March||Assigned to Cavalry, Ewell’s Division, Army of the Valley. Colonel Field was promoted to brigadier general and given command of an infantry brigade.|
|April 15-18||Lieutenant Colonel Julien Harrison was promoted to colonel, Major Cabell was promoted to lieutenant colonel, and Captain Thomas Flournoy was promoted to major.|
|May||Assigned to Cavalry, Ewell’s Division, Department of Northern Virginia|
|June 12-15||Stuart’s Ride Around McClellan|
|June-July||Assigned to Cavalry Brigade, Army of the Valley|
|July 16||Colonel Julien Harrison resigned. Major Thomas Flournoy was promoted to colonel, Major John S. Green was promoted to lieutenant colonel and Captain Cabell Flournoy (Thomas’ son) was promoted to major.|
|August||Assigned to Robertson’s-Jones’s Brigade, Cavalry Division, Army of Northern Virginia|
Battle of Cedar Mountain
|August 22||Catlett’s Station|
|August 23||Warrenton Springs|
Commanded by Colonel Thomas S. Flournoy.
|October 15||Colonel Flournoy resigned. Former Colonel Julien Harrison was reappointed to colonel.|
|December||Assigned to Jones’s Brigade, Army of the Valley|
|January 2-5||Morefield-Petersburg Expedition|
|April 20-May 21||
Jone’s and Imboden’s West Virginia Raid
|April 25||Greenland Gap|
|May||Assigned to Jones’s Brigade, Cavalry Division, Army of Northern Virginia|
Colonel Julien Harrison was wounded in the left thigh. He never returned to field service and retired to the Invalid Corps.
Battle of Millville
The regiment was commanded by Major Cabell E. Flournoy. It was not on the field at Gettysburg but took active part in the campaign.
July 1. The 12th Regiment was detached and remained on the south side of the Potomac River. White’s 35th Virginia Battalion was also detached. The remaining regiments crossed the Potomac at Williamsport Md.
July 2. Marched from near Greencastle Pa. to Chambersburg Pa.
July 3. The Brigade marched from Chambersburg Pa. via Cashtown to Fairfield Pa. Met the 6th U. S. Cavalry about two miles from Fairfield. The 7th Virginia charged in the advance and was repulsed. The 6th Virginia in support charged and forced the Union Regiment to retire with heavy loss. The Brigade encamped at Fairfield for the night.
July 4. The Brigade held the mountain passes and picketed the left flank of the Army.
|August 11||White Post|
|September||Assigned to Jones’s Brigade, Hampton’s Division, Cavalry Corps, Army of Northern Virginia|
|September 19||Lieutenant Colonel Cabell, a medical doctor and surgeon, was appointed superintendent at the Jackson Hospital in Richmond.|
|Late September||Assigned to Lomax’s Brigade, F. Lee’s-Rosser’s Cavalry Division, Cavalry Corps, Army of Northern Virginia|
Mine Run Campaign
|April 23||Lieutenant Colonel Green resigned “for the good of the service”|
Captain Daniel Richards was wounded.
Battle of North Anna
|May 31-June 3||
Colonel Cabell Carrington Flournoy was killed.
Battle of Trevilian’s Station
|August||Assigned to Lomax’s-Payne’s Brigade, F. Lee’s-Rosser’s Cavalry Division, Army of the Valley|
|September 3||Captain Daniel T Richards of Company D was promoted to lieutenant colonel and Captain Daniel Grimsley of Company B was promoted to major|
|September 24||Lieutenant Colonel Richards was wounded at Luray.|
|September 26-27||Weyer’s Cave|
|October 28||New Creek|
|February||Assigned to Payne’s Bigade, F. Lee’s Division, Cavalry Corps, Army of Northern Virginia|
Most of the army’s cavalry cut through Federal lines and escaped. Only three men surrendered at Appomattox.