91st Pennsylvania Infantry

== Regimental History and Service Record ==
Organized at Philadelphia and mustered in December 4, 1861. Left State for Washington, D.C., January 21, 1862. Attached to Defenses of Washington, D.C., to August, 1862. 1st Brigade, 3rd Division, 5th Army Corps, Army Potomac, to May, 1863. 3rd Brigade, 2nd Division, 5th Army Corps, to March, 1864. 4th Brigade, 1st Division, 5th Army Corps, to April, 1864. 1st Brigade, 1st Division, 5th Army Corps, to June, 1864. 1st Brigade, 2nd Division, 5th Army Corps, June, 1864. 2nd Brigade, 2nd Division, 5th Army Corps, to July, 1864. 2nd Brigade, 1st Division, 5th Army Corps, to December, 1864. 3rd Brigade, 1st Division, 5th Army Corps, to March, 1865. 1st Brigade, 3rd Division, 5th Army Corps, to July, 1865.
SERVICE.--Duty at Washington, D.C., until April 27, 1862, and at Alexandria, Va., until August 21. Near Fairfax C. H. until September 15. Reached Antietam, Md., September 18. Duty at Sharpsburg, Md., until October 30. Skirmishes at Kearneysville and Shepherdstown October 15-16. 
* October 16-17, 1862 - Reconnoissance from Sharpsburg, Maryland to Smithfield, West VirginiaNot originally listed on unit homepage but referenced on Dyer summary - conflicts with Leesburg recon dates, or is this the error?
Reconnaissance to Leesburg, W. Va., October 16-17. Movement to Falmouth, Va., October 30-November 19. Battle of Fredericksburg, Va.,December 12-15. Burnside's second Campaign, "Mud March," January 20-24, 1863. Duty at Falmouth, Va., until April 27. 
* April 27-May 6, 1863 - The Chancellorsville Campaign
** May 1-5, 1863 - Battle of Chancellorsville, Virginia
* June 11-August 1, 1863 - The Gettysburg Campaign
** July 1-3, 1863 - Battle of Gettysburg, Pennsylvania
Pursuit of Lee July 5-24. Duty on line of the Rappahannock until October. Bristoe Campaign October 9-22. Advance to line of the Rappahannock November 7-8. Rappahannock Station November 7. Mine Run Campaign November 26-December 2. Regiment reenlisted December 26, 1863. Veterans on furlough January 2-February 16, 1864, and near Chester until March 2.
* May 4-June 12, 1864 - The Overland Campaign
** May 5-7, 1864 - Battle of the Wilderness, Virginia
** May 8-21, 1864 - Battles of Spotsylvania Court House, Virginia
*** May 8, 1864 - Combat at Laurel Hill, Virginia
*** May 12, 1864 - Assault on the Salient at Spotsylvania Court House, Virginia
** May 22-26, 1864 - Operations on Line of the North Anna River, Virginia
** May 26-28, 1864 - Operations on Line of the Pamunkey River, Virginia
** May 28-31, 1864 - Operations on Line of the Totopotomoy River, Virginia
** June 1-12, 1864 - Battles of Cold Harbor, Virginia
*** June 1-3, 1864 - Battle of Bethesda Church, Virginia
Before Petersburg June 16-18. Siege of Petersburg June 16, 1864, to April 2, 1865. Mine Explosion, Petersburg, July 30, 1864 (Reserve). Six Mile House, Weldon Railroad, August 18-21. Poplar Grove Church, Peeble's Farm, September 29-October 2. Boydton Plank Road, Hatcher's Run, October 27-28. Warren's Raid to Weldon Railroad December 7-12. Dabney's Mills, Hatcher's Run, February 5-7, 1865. Appomattox Campaign March 28-April 9. Lewis Farm, Gravelly Run, March 29. Junction of Quaker and Boydton Roads March 29. White Oak Road March 30-31. Five Forks April 1. Appomattox C. H. April 9. Surrender of Lee and his army. Moved to Washington, D. C:, May 1-12. Grand Review May 23. Mustered out July 10, 1865. 
== Regimental Roster ==
== Regiment Statistical Information ==
* Regiment lost during service 6 Officers and 110 Enlisted men killed and mortally wounded and 2 Officers and 82 Enlisted men by disease. Total 200.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 759, 827, 905, 916, 932, 933, 934, 936, 938, 939, 940, 941, 1604)
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