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.
|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.|
|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 5||Piedmont, Mt. Crawford|
|June 6||Occupation of Staunton|
|June 12||Cedar Creek and Piney River near Amherst C. H.|
|June 14||Near Glasgow|
|June 19-July 15||Retreat to Kanawha Valley, thence to Parkersburg and Martinsburg|
|June 21||Catawba Mountains and about Salem|
|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|
|February 27-March 25||Sheridan’s Expedition from Winchester|
|March 2||Swoope’s Depot and Staunton|
|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|
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.|