The 91st Pennsylvania Volunteer Infantry Regiment lost 6 officers and 110 enlisted men killed and mortally wounded and 2 officers and 82 enlisted men to disease during the Civil War. It is honored by a monument on Little Round Top at Gettysburg.
|December 4||Organized at Philadelphia and mustered in under Colonel Edgar M. Gregory|
|January 21||Left State for Washington, D.C. and attached to Defenses of Washington, D.C.|
|April 27||At Alexandria, Va.|
|August 21||Near Fairfax C. H., attached to 1st Brigade, 3rd Division, 5th Army Corps, Army Potomac|
|September 15||March to Antietam|
|September 18||Reached Antietam, Md.|
|September-October||Duty at Sharpsburg, Md.|
|October 15-16||Skirmishes at Kearneysville and Shepherdstown|
|October 16-17||Reconnaissance to Leesburg, W. Va.|
|October 30-November 19||Movement to Falmouth, Va.|
Battle of Fredericksburg
|January 20-24||Burnside’s second Campaign, “Mud March”|
|February-April||Duty at Falmouth, Va.|
|April 27-May 6||
Attached to 3rd Brigade, 2nd Division, 5th Army Corps.
Colonel Gregory was wounded.
|June 13-July 24||Gettysburg Campaign|
The regiment was commanded by Lieutenant Colonel Joseph H. Sinex. It brought 258 men to the field, losing 3 killed and 16 wounded.
From the monument on Little Round Top at Gettysburg:
July 2. Moving at the double-quick in the evening, the regiment took position here and having aided in repulsing the attack of the enemy upon this line, remained until the close of battle.
Present at Gettysburg 258 Officers and men. Killed and died of wounds 4 men. Wounded 2 officers 13 men.
|July 5-24||Pursuit of Lee|
|August-October||Duty on line of the Rappahannock. Colonel Gregory returned to command after recovering from his Chancellorsville wound, and took command of the brigade as senior colonel.|
|October 9-22||Bristoe Campaign|
|November 7-8||Advance to line of the Rappahannock|
|November 7||Rappahannock Station|
|November 26-December 2||Mine Run Campaign|
|December 26||Regiment reenlisted|
|January 2||Veterans on furlough|
|February 16||Near Chester|
|March||Attached to 4th Brigade, 1st Division, 5th Army Corps|
|April||Attached 1st Brigade, 1st Division, 5th Army Corps|
|May 4-June 12||Rapidan Campaign|
|May 5-7||Battle of the Wilderness|
|May 8-21||Battle of Spotsylvania Court House|
|May 8||Laurel Hill|
|May 12||Assault on the Salient|
|May 23-26||North Anna River|
|May 26-28||On line of the Pamunkey|
Attached to 1st Brigade, 2nd Division, 5th Army Corps.
|June 1-3||Bethesda Church|
|July||Attached to 2nd Brigade, 1st Division, 5th Army Corps|
|July 30||Mine Explosion, Petersburg (Reserve)|
|August 18-21||Six Mile House, Weldon Railroad|
|September 29-October 2||Poplar Grove Church, Peeble’s Farm|
|October 27-28||Boydton Plank Road, Hatcher’s Run|
|December||Attached to 3rd Brigade, 1st Division, 5th Army Corps|
|December 7-12||Warren’s Raid to Weldon Railroad|
|February 5-7||Dabney’s Mills, Hatcher’s Run|
|March||Attached to 1st Brigade, 3rd Division, 5th Army Corps|
|March 28-April 9||Appomattox Campaign|
|March 29||Lewis Farm, Gravelly Run and Junction of Quaker and Boydton Roads|
|March 30-31||White Oak Road|
|April 1||Five Forks|
Appomattox Court House
Surrender of Lee and his army.
|May 1-12||Moved to Washington, D. C.|
|May 23||Grand Review|
|July 10||Mustered out|