The 6th United States Cavalry Regiment lost 2 officers and 50 enlisted men killed or mortally wounded and 1 officer and 106 enlisted men to disease during the Civil War. It is honored by a monument at Gettysburg.

1861
May 4 Organized as the Third United States Cavalry by direction of the President at Pittsburg, Pa.

The commissioned officers were:

Colonel David Hunter, Lieutenant Colonel William H. Emory, Majors D. H. Rucker and E. H. Wright.
Captains I. N. Moore, A. V. Kautz, A. W. Evans, Wm. S. Abert, D. McM. Gregg, J. H. Taylor, J. I. Gregg, John Savage, G. C. Cram, C. R. Lowell, J. S. Brisbin, and H. B. Hayes.
First Lieutenants J. K. Mizner, W. W. Averill, H. M. Enos, I. W. Claflin, S. H. Brown, B. T. Hutchins, H. T. McLean, Tattnall Paulding, Frederick Dodge, J. B. Johnson, J. F. Wade, M. H. Leavenworth.
Second Lieutenants J. W. Spangler, Peter McGrath, Hugh McQuade, and C. B. McLellan.

May 17 Colonel Hunter was promoted to brigadier general. Lieutenant Colonel Emory would lead the regiment’s organization.
July 29 Confirmed by Act of Congress.
August 3 Captain William Price Sanders (USMA ’56) of the 3rd United States Cavalry transferred in
August 10 The designation of the regiment was changed from the Third Cavalry to the Sixth United States Cavalry, and the Regiment of Mounted Rifles was redesigned as the Third Cavalry.
September 7 Major Rucker having declined, Major J. H. Carleton was appointed second major, and Major L. A. Williams was appointed the junior major. Captain Moore having declined, Captain William P. Sanders was appointed.
October 12 Companies B, D, E, F, G, H, I and K completed their organization. Moved from Pittsburg to the Camp of Instruction in Washington, D.C.
October 15 Company A completed its organization and Company M would do so by the end of the month. The training of the regiment was started.
December 1 The 15 men of the band joined the regiment
December 23 Company C was organized
December 31 The regiment was declared ready for the field, mustering 34 officers and 950 men. Attached to Stoneman’s Cavalry Command, Army Potomac
1862
March Attached to Emery’s Brigade, Cavalry Reserve, Army Potomac
March 10-15 Advance on Manassas, Va. The regiment broke winter camp, crossed the Long Bridge and marched to Fairfax Court House.
March 14-16 Reconnaissance to Cedar Run
March 27-30 Embarked at Alexandria and moved to Virginia Peninsula
April 5-May 4 Siege of Yorktown
May 4 Cheese Cake Church
May 9 Slatersville
May 11 New Kent Court House
May 20 New Bridge
May 24 Mechanicsville
May 27 Hanover Court House
May 27-29 Operations about Hanover Court House
May 28-29 Destruction of bridges, South Anna River
June 2 Expedition to Wormsley Ferry
June 13-15 Operations against Stuart
June 16 Ashland
June 25-July 1 Seven days before Richmond
June 26-July 2 Operations about White House
June 26 Black Creek
July Attached to 1st Brigade, Cavalry Division, Army Potomac
August 5 Malvern Hill
August 15-26 Movement to Alexandria
September 6-22 Maryland Campaign. Attached to 1st Brigade, Pleasanton’s Cavalry Division, Army Potomac
September 5 Fall’s Church
September 10-11 Sugar Loaf Mountain near Frederick
September 15 Petersville
September 16-17
Battle of Antietam

The regiment was commanded by Captain William P. Sanders. It was detached as Provost Guard behind the right flank.

Battle of Antietam

The regiment was commanded by Captain Joseph H. McArthur (USMA ’49)

From the brigade marker on the Antietam battlefield:

The Fifth United States Cavalry, Captain Joseph H. McArthur, commanding, crossed the Middle Bridge over the Antietam shortly before noon and took position on the right of the road, its left resting at this point, in support to the Artillery in its front. It was withdrawn across the creek late in the day.

The Sixth United States Cavalry, Captain William P. Sanders, commanding, was detached and deployed in skirmishing order, as a Provost Guard, in rear of the right wing of the Army of the Potomac.

September 19-20 Shepherdstown Ford
September 28 Charlestown
September 29 Hillsboro
October 1-2 Reconnaissance from Harper’s Ferry to Leesburg. Attached to 2nd Brigade, Pleasanton’s Cavalry Division, Army Potomac
October 1 Waterford
October 6 Charlestown
October 16-17 Reconnaissance to Charlestown
October 16 Charlestown
November 1 Philomont
November 2-3 Union
November 2-3 Upperville and Bloomfield
November 3 Ashby’s Gap
November 4 Markham Station
November 5-6 Barbee’s Cross Roads, Chester Gap and Markham
November 7-8 Amissville
November 8 Little Washington
November 9 Newby’s Cross Roads
November 10 Corbin’s Cross Roads, near Amissville
November 17 Sulphur Springs
December 12-15 Battle of Fredericksburg
1863
February Attached to Reserve Brigade, 1st Division, Cavalry Corps, Army Potomac
March 4 Captain Sanders apponted colonel of the 5th Kentucky Cavalry Regiment
April 27-May 8 Chancellorsville Campaign
April 29-May 8 Stoneman’s Raid
April 29 Stevensburg
June 9
Battle of Brandy Station

Commanded by Captain George C. Cram.

June 19 Middleburg
June 21 Upperville
July 1-3
Battle of Gettysburg

The regiment was commanded by Major Samuel H. Starr.

From the monument on the South Cavalry Battlefield at Gettysburg:

July 3 Moved at 12 m. with the Brigade from Emmitsburg to attack the Confederate Right and Rear but was detached from the Brigade to intercept the Confederate wagon train supposed to be near Fairfield or Millerstown. Engaged a superior force of the Confederate Cavalry near Mllerstown and withdrew after heavy loss.

Casualties: killed 6 men; wounded 5 officers and 23 men; missing 5 officers and 203 men

From the markers on Ortanna Road west of Gettysburg:

Here the temporary field hospitals of the regiment of July 3rd 1863. The regiment commanded by Major. S. H.Starr was sent to Fairfield to capture a Confederate wagon train guarded by Jones’ Brigade of Confederate Cavalry consisting of the 6th 7th & 11th Rgt’s Virginia Cavalry, Clue’s Virginia Battery and the 35th Virginia Battalion were met on this road & after a severe hand-to-hand fight were compelled to retire.

Brought into action 400, lost 242.

July 6 Williamsport, Md.
July 7 Funkstown
July 8 Boonesboro
July 9 Benevola or Beaver Creek
July 10-13 At and near Funkstown
July 14 Falling Waters
July 21-22 Manassas Gap, Va.
July 23 Wapping Heights
July 31-August 1 Kelly’s Ford
August 1-4 Brandy Station
September 13-17 Advance from the Rappahannock to the Rapidan
October 9-22 Bristoe Campaign
October 11 Brandy Station
November 7-8 Advance to line of the Rappahannock
November 26-December 2 Mine Run Campaign
1864
February 6-7 Demonstration on the Rapidan
February 6-7 Barnett’s Ford
May 4-June 12 Rapidan Campaign
May 5-7 Wilderness
May 7-8 Todd’s Tavern
May 9-24 Sheridan’s Raid to James River
May 11 Ground Squirrel Church and Yellow Tavern
May 12 Richmond fortifications
May 26-28 Line of the Pamunkey
May 27 Hanovertown Ferry and Hanovertown
May 28 Haw’s Shop
May 28-31 Totopotomoy
May 30 Old Church and Mattadequin Creek
May 31-June 1 Cold Harbor
June 7-24 Sheridan’s Trevillian Raid
June 11-12 Trevillian Station
June 12 Mallory’s Cross Roads
June 21 Black Creek or Tunstall Station and White House or St. Peter’s Church
June-August Siege of Petersburg
July 27-28 Deep Bottom
July 28 Malvern Hill
August 7-
November 28
Sheridan’s Shenandoah Valley Campaign. Attached to 3rd (Reserve) Brigade, 1st Division, Cavalry Corps, Army Shenandoah, Middle Military Division
September 15 Sevier’s Ford, Opequan Creek
September 19 Battle of Opequan, Winchester
September 21-22 Fisher’s Hill
September 24 Luray Valley
October 19 Battle of Cedar Creek
December 19-28 Raid from near Winchester to Gordonsville
1865
February 27-
March 25
Sheridan’s Raid from Winchester
March Attached to 3rd Brigade, 1st Division, Cavalry Corps, Army Potomac
March 2 Occupation of Staunton and Action at Waynesboro
March 8 Duguidsville
March 28-April 9 Appomattox Campaign
March 30-31 Dinwiddie Court House
April 1 Five Forks
April 2 Scott’s Cross Roads
April 4 Tabernacle Church or Beaver Pond Creek
April 4-5 Amelia Springs
April 6 Sailor’s Creek
April 8 Appomattox Station
April 9 Appomattox Court House. Surrender of Lee and his army.
April 23-29 Expedition to Danville
May March to Washington, D.C.
May 23 Grand Review
June At Frederick, Md. Attached to 8th Army Corps, Middle Dept., to October