The 20th Pennsylvania Cavalry lost 3 officers and 22 enlisted men killed and mortally wounded and 3 officers and 100 enlisted men to disease during the Civil War.

1863
June to August Organized at Harrisburg for six months service
July 7 March to Greencastle
July 8-24 Scouting into Maryland and pursuit of Lee
July 25 Moved to Falling Water and picket shores of the Potomac
Ordered to Sir John’s Run, W. Va and assigned to guard duty on Baltimore & Ohio Railroad.

Companies F and I at Berkeley Springs.

Companies D and E at Bloomery Gap.

Companies A and H at Great Cacapon Bridge.

Company C at Hancock

The five Emergency Companies on duty at Philadelphia, Reading and Pottsville, Pa.

September 1 Skirmish at Bloomery Gap and at Bath
September Regiment concentrated at Sir John’s Run, W. Va. for duty there and at Springfield
December 7-11 Scout in Hampshire, Hardy, Frederick and Shenandoah Counties (Detachment)
December 24 Regiment moved to Harrisburg, Pa.
1864
January 7 Mustered out
February Reorganized at Harrisburg and Philadelphia
March Reported to Sigel at Martinsburg, W. Va. Attached to 2nd Brigade, 1st Cavalry Division, Dept. West Virginia
April 30-May 16 Sigel’s Expedition to New Market, Va.
May 14 Rude’s Hill and New Market
May 15 Battle of New Market
May 26-July 1 Hunter’s Expedition to Lynchburg
June 4 Harrisonburg
June 5 Piedmont, Mt. Crawford
June 6 Occupation of Staunton
June 10 Staunton
June 11 Midway
June 12 Cedar Creek and Piney River near Amherst C. H.
June 14 Near Glasgow
June 17-18 Lynchburg
June 19-July 15 Retreat to Kanawha Valley, thence to Parkersburg and Martinsburg
June 21 Catawba Mountains and about Salem
July 17 Martinsburg
July 17-18 Snicker’s Ferry
July 19 Ashby’s Gap and Berry’s Ford
July 21 Ashby’s Gap
July 23 Near Kernstown
July 24 Kernstown, Winchester
July 25 Bunker Hill and Martinsburg
July 30 Ordered to Harper’s Ferry
August Duty at Halltown, Pleasant Valley and Cumberland, Md. Attache to 1st Brigade, 1st Cavalry Division, West Virginia
November Attached to 2nd Brigade, 1st Division, Cavalry Corps, Army of the Shenandoah
December 19-28 Expedition from Winchester to Gordonsville
December 21 Madison C. H.
December 22 Liberty Mills
December 23 Near Gordonsville
1865
February 27-March 25 Sheridan’s Expedition from Winchester
March 2 Swoope’s Depot and Staunton
March 2 Waynesboro
March 11 Goochland C. H.
March 28-April 9 Appomattox Campaign. Attached to 2nd Brigade, 1st Division, Cavalry Corps, Army of the Potomac
March 30-31 Dinwiddie C. H.
April 1 Five Forks
April 2 Scott’s Cross Roads
April 4 Tabernacle Church or Beaver Pond Creek
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 17 Consolidated with 2nd Pennsylvania Cavalry to form 1st Provisional Cavalry Regiment.