(I) 21st Pennsylvania Cavalry

== Regimental History and Service Record ==
(182nd Volunteers)
Organized at Harrisburg and Chambersburg June 28-August 1, 1863, for six months. Companies "C," "E," "H," "K," "L," "M," duty at Pottsville, Pa., and Scranton, Pa., and Company "B" at Gettysburg, Pa. Companies "A," "D," "F," "G" and "I" ordered to Harper's Ferry, W. Va., August 23, 1863. Attached to Cavalry Brigade, 1st Division, Dept. West Virginia, to February, 1864. Duty about Harper's Ferry, W. Va. Expedition from Charlestown to New Market November 15-18 (Detachment). Mount Jackson November 16. Wells' demonstration from Harper's Ferry December 10-21. Skirmish at Winchester January 3, 1864. Mustered out February 20, 1864.
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The Twenty-first Cavalry was recruited during the months of July and August, 1863, by authority of Governor Curtin, under the President's call of June 15th, for cavalry for six months' service.
Company A was recruited in York county,
Company B in Adams County,
Companies C, and G in Lancaster County,
Companies D, I, I, K, L, and M in Franklin County,
Comapny E in Bedford County, and
Company F in Cambria County.
The companies were equipped and mounted at Camp Couch, near Harrisburg, and were thence sent to camp of instruction near Chambersburg. The following field officers were selected and commissioned:
William H. Boyd, Colonel
Richard F. Moson, Lieutenant Colonel
Charles F. Gillies, Major
Oliver B. Knowles, Major
John W. Jones, Major
The field officers were all experienced in cavalry duty. Colonel Boyd had commanded a company in the Lincoln Cavalry, which had attained distinction upon the Peninsula, and especially in skirmishing with the advance of Lee's army, in the Cumberland Valley, in the Gettysburg campaign. Lieutenant Colonel Moson had commanded a company in the Seventh Cavalry. Major Gillies was a regular army officer, and Major Knowles had served with great gallantry under--Captain Boyd--in-the Lincoln Cavalry. Most of the line officers and men had previously been in the service.
On the 23d of August, the regiment was ordered to Harrisburg, whence a detachment, consisting of companies C, E, K, H, L, and M, was sent for duty to Pottsville and Scranton, and company B to Gettysburg. The remaining five companies, under command of Colonel Boyd, proceeded to Harper's Ferry, and during the fall and winter, were engaged in arduous duty in the Department of the Shenandoah.
== Regimental Roster ==
 
 
 Field and Staff Officers
 
 
 Company A
* This company was recruited primarily from York County, Pennsylvania
 
 
 Company B
* This company was recruited primarily from Adams County, Pennsylvania
 
 
 Company C
* This company was recruited primarily from Lancaster County, Pennsylvania
 
 
 Company D
* This company was recruited primarily from Franklin County, Pennsylvania
 
 
 Company E
* This company was recruited primarily from Bedford County, Pennsylvania
 
 
 Company F
* This company was recruited primarily from Cambria County, Pennsylvania
 
 
 Company G
* This company was recruited primarily from Lancaster County, Pennsylvania
 
 
 Company H
* This company was recruited primarily from Franklin County, Pennsylvania
 
 
 Company I
* This company was recruited primarily from Franklin County, Pennsylvania
 
 
 Company K
* This company was recruited primarily from Franklin County, Pennsylvania
 
 
 Company L
* This company was recruited primarily from Franklin County, Pennsylvania
 
 
 Company M
* This company was recruited primarily from Franklin County, Pennsylvania
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== Regiment Statistical Information ==
== Legacy ==
* The following pertinent personal papers are in the Institute's Manuscript Archive:
** Charles, Henry F. - BoyerColl (Enlisted man's letters andmemoirs, l862-l865)
** Crawford, J. Milton - LeighColl Bk 36: 18 (Enlisted man's letter, May l8, l865)
** Maxwell, Samuel - CWMiscColl (Enlisted man's letter, Oct l, l863)
** Pennsylvania 2lst Cav Regtl Papers - PASaveFlagColl (Company transcribed register, 1864)
== Notes ==
== Sources == 
* Bates, Samuel P. History of the Pennsylvania Volunteers, 1861-5. Wilmington, NC:Broadfoot, 1993. Vol. 9, pp. 77-127 (26 photocopied pages). E527B32.1993v9 (Brief history and roster of the regiment).
* _____. Memoir of Oliver Blanchly Knowles: Late Colonel ofthe 21st Pennsylvania Cavalry and Brevet-Brigadier General. Phila: n.p., l875. 14 p. (14photocopied pages). E527.6.21st.B3.
* Burger, T. W. "First to Fall." CW Times Illus (Aug 2000): pp. 32-38 (7 photocopied pages).
* (Page 1568)
* G.W. Sandoe, early casualty of Gettysburg Campaign.
* Horner, John B. Sgt. Hugh Paxton Bigham: Lincoln's Guard at Gettysburg.Gettysburg, PA: Horner Enterprises, 1994. 58 p. E527.6.21st.B56.
* Pennsylvania Battlefield Comm. Pennsylvania at Gettysburg:Ceremonies at the Dedication of the Monuments Erected by theCommonwealth.... Vol. 2. Hbg, PA: Wm S Ray, 1914. pp. 901-04 (3 photocopied pages). E475.53P422v2. (Addresses delivered at the dedicationof the regimental monument and a photo of that monument at the Gettysburg National Military Park).
* Sauers, Richard A. Advance the Colors!: Pennsylvania CivilWar Battle Flags. Vol. 2. Hbg, PA:Capitol Preservation Comm, 1991. pp. 479-81 (3 photocopied pages). E527.4S38.1991v2.(Brief unit history with emphasis on the regimental flags).16th Pennsylvania Cavalry (p. 2)
* Our Photo Archive includes images of individuals of this unit.
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