The regiment lost 3 officers and 65 enlisted men killed or mortally wounded and 3 officers and 130 enlisted men to disease during the Civil War. It is honored by a monument at Gettysburg.

From the monument: “Casualties in action during the war: Killed 1 officer, 32 men, total 33; Wounded 10 officers, 147 men, total 157; Captured or missing 12 officers, 208 men, Total 220. Aggregate 410.”

April 5, Patterson’s Union Cavalry (later Company G) organized at Pittsburgh, Pa.
August Companies A-F organized at Baltimore and attached to Dix’s Command, Baltimore, Md.; Companies G, H, I and K attached to 1st Virginia Union Cavalry, Department of West Virginia
August 19 Companies H and I organized in Washington and Allegheny Counties, Pa. Morehead’s Cavalry Company (later Company K) organized at Allegheny City, Pa.; Co. K ordered to Washington, D.C., attached to Landers’ Command, Army of the Potomac, duty at Williamsport, Hancock and Cumberland, Md.
September 3-4 Skirmishes at Edward’s Ferry (Company. K)
October 3 Action at Greenbrier, W. Va. (Company G)
October 21 Ball’s Bluff, Va. (Detachment)
January Companies G, H, I and K assigned to 1st Maryland Cavalry
January 4 Stone’s Cross Roads, Ball’s Bluff, Bath and Alpine Station (Companies G, H and I)
January 5-6 Hancock (Company K)
January 7-
February 14
Bloomery Gap (Company I)
February – March At Baltimore
March Assigned to Hatch’s Cavalry Brigade, Dept. of the Shenandoah
March to June Operations in Shenandoah Valley
March 7-15 Advance on Winchester
May 24-26 Pursuit of Jackson up the Valley. Retreat to Williamsport, Md.
May 24 Middletown (Company. A, B, C, G and I)
May 25 Winchester (Company A, B, C, G and I); (Company D, F, H, K and L arrive at Harper’s Ferry)
May 28 Charlestown
May 28-30 Defense of Harper’s Ferry (Company D, F, H, K and L)
June 9 Near Harper’s Ferry
June Attached to Cavalry Brigade, 2nd Corps, Pope’s Army of Virginia
July 12-17 Expedition to Madison Court House, Culpeper and Orange Court Houses
July 12 Near Culpeper
July 13 Rapidan Station
August 8 Madison Court House
August 9 Battle of Cedar Creek
August 16 – September 2 Pope’s Campaign in Northern Virginia
August 21-23 Fords of the Rappahannock
August 23-24 Fauquier, White Sulphur Springs
August 28 Gainesville
August 29 Groveton
August 30 Bull Run
September 1 Chantilly
September 2 Evacuation of Winchester (Companies H & I)
September Assigned to the Cavalry Brigade, 11th Army Corps, Army of the Potomac
September 6 Frederick, Md.
September 7 Boonsboro, Md.
September 10 Near Boonsboro
September 12-13 Maryland Heights and Harper’s Ferry (Companies H & I)
September 14 Cut way through enemy’s lines (Companies H & I)
September 14 Culpeper
September 15 Sharpsburg
September 16 Capture of Longstreet’s trains (Companies. H & I); Rapidan Station
September – December Duty in the Defenses of the Upper Potomac covering Washington, D.C.
October 23-24 Manassas, Va.
October 29 Affair opposite Williamsport (Detachment)
November 9 Reconnaissance from Bolivar Heights to Rippen, W. Va. (2 Companies)
December 2-6 Reconnaissance to Winchester (Detachment)
December 12-15 Battle of Fredericksburg
December 27 Dumfries
January – Apri Duty in the defenses of the Upper Potomac
January 26 Near Cumberland, Md., Grove Church, near Morrisville
February Attached to Defenses Upper Potomac, 8th Army Corps, Middle Department; then 2nd Brigade, 3rd Division, Cavalry Corps, Army of the Potomac
April 27 – May 8 Chancellorsville Campaign, Stoneman’s Raid
May 3 South Anna Bridge, near Ashland
June Attached to 1st Brigade, 2nd Division, Cavalry Corps
June 9 Brandy Station, or Fleetwood, and Beverly Ford
June 17 Aldie
June 21 Frederick, Md. (Detachment)
June 23 Upperville
June 25 Middleburg
June 30 Westminster
July 1-3
Battle of Gettysburg

The regiment was commanded by Lieutenant Colonel James M. Deems. It brought 335 men to the field and lost two wounded and one missing.

July 4-6 Emmettsburg
July 5 Middletown
July 7 Leitersburg
July 8 Cavetown
July 10 Hagerstown and Old Antietam Forge, near Leitersburg
July 14 and 16 Shepherdstown
September 6 Beverly Ford
September 13-17 Advance from the Rappahannock to the Rapidan
September 13 Culpeper Court House
September 13 and 15-16 Rapidan Station
September 15 Raccoon Ford
September 21 White’s Ford
October Attached to Provost Marshal General’s Command, Army of the Potomac
October 9-22 Bristoe Campaign
October 10 Germania Ford and James City
October 11 Near Warrenton
October 12-13 White Sulphur Springs
October 14 Bristoe Station; Near Centreville and Brentsville
November 7-8 Advance to line of the Rappahannock
November 26 – December 2 Mine Run Campaign
November 26 Grove Church, near Morrisville
November 29 Parker’s Store
December Duty In Middle Department
February Attached to 3rd Separate Brigade, 8th Army Corps, Middle Dept.
May 6 Princeton
May 8 Jeffersonville
June Attached to 3rd Brigade, 1st Division, 10th Army Corps, Army of the James, Dept. of Virginia and North Carolina
June 16-17 Wier Bottom Church, on Bermuda Hundred Front, Va.
June 19 Richmond and Petersburg R. R.
July 21 Deep Bottom
July 27-28 New Market Heights
August 14-18 Strawberry Plains, north of the James
August 14 Flusser’s Mills
August 16-18 Deep Run
August 25 – September 27 Siege of Petersburg
September 28-30 Battle of Chaffin’s Farm
October Attached to 3rd Brigade, Cavalry Division, Dept. of Virginia and North Carolina
October 7 New Market Heights
October 13 Darbytown Road
October 27-28 Fair Oaks
December 7 Smithfield
January Duty before Richmond
January 30 Scout to Long and Bottom’s Bridge
February 11-15 Expedition to Fearnsville and Smithfield
March 28-
April 9
Appomattox Campaign
March 30-31 Dinwiddie Court House
April 1 Five Forks
April 2 Sutherland Station
April 3 Burgess Mills
April 4 Deep Creek
April 5 Amelia Court House
April 6 Sailor’s Creek and Harper’s Farm
April 6-7 Farmville
April 9
Appomattox Court House

Surrender of Lee and his army

April Cavalry, Dept. of Virginia
April 23-29 March to Danville
April – August Duty in the Department of Virginia
August 8 Mustered out