(II) 23rd Pennsylvania Infantry

== Regimental History and Service Record ==
* August 31, 1861 - Organized at Philadelphia, Pennsylvania for a 3 year term of service
Ordered to Washington, D.C., September. Attached to Buell's (Couch's) Division, Army of the Potomac, to March, 1862. 2nd Brigade, 1st Division, 4th Army Corps, Army of the Potomac, to July, 1862. 3rd Brigade, 1st Division, 4th Army Corps, to September, 1862. 3rd Brigade, 3rd Division, 6th Army Corps, Army of the Potomac, to October, 1862. 1st Brigade, 3rd Division, 6th Army Corps, to January, 1864. Johnson's Island, Sandusky, Ohio, to May 1864. 4th Brigade, 1st Division, 6th Army Corps, Army of the Potomac, to July, 1864. 3rd Brigade, 1st Division, 6th Corps, Army of the Shenandoah, to September, 1864.
SERVICE.--Duty in the Defenses of Washington until March, 1862. Advance on Manassas, Va., March 10-15. 
* Moved to the Virginia Peninsula March 26. 
* March 26-September 2, 1862 - The Peninsula Campaign
** Warwick River April 4.
** April 5-May 4, 1862 - Siege of Yorktown, VirginiaNot originally referenced on Dyer summary, but referenced on unit homepage
** May 5, 1862 - Battle of Williamsburg, Virginia
** May 20-23, 1862 - Operations about Bottom's Bridge, Virginia
*** May 23, 1862 - Reconnaissance from Bottom's Bridge to Richmond, Virginia
** May 31-June 1, 1862 - Battle of Seven Pines, Virginia 
** June 25-July 1, 1862 - The Seven Days Battles before Richmond, Virginia
*** June 30, 1862 - Engagement at White Oak Swamp, Virginia
*** July 1, 1862 - Engagement at Malvern Hill, Virginia
* At Harrison's Landing until August 16. 
* Reconnaissance to Malvern Hill August 5-7. 
* Movement to Alexandria, thence to Chantilly August 16-30, 
* Chantilly September 1. 
* September 3-20, 1862 - The Maryland Campaign
** Guard Potomac from White's Ford to Nolan's Ferry September 11-24 during battles of South Mountain and Antietam
*** September 15, 1862 - Skirmish at White's Ford, Maryland
*** Company "B" captured at Nolin's Ford September 15 by Colonel White's Command
*** September 17, 1862 - Battle of Antietam, Maryland 
* Moved to Downsville September 24 and picket duty on the Potomac until November 1. 
* Movement to Falmouth, Va., November 1-19. 
* Battle of Fredericksburg December 12-15. 
* "Mud March" January 20-24, 1863. 
* At Falmouth until April. 
* April 27-May 6, 1863 - The Chancellorsville Campaign
** Operations at Franklin's Crossing April 29-May 2. 
** Fredericksburg, Maryes Heights, May 3. 
** Salem Heights May 3-4. Banks' Ford May 4. 
**Operations about Deep Run Ravine June 6-13. 
* June 11-August 1, 1863 - The Gettysburg Campaign
** July 1-3, 1863 - Battle of Gettysburg, Pennsylvania
At Warrenton and Culpepper to October. Bristoe Campaign October 9-22. Advance to line of the Rappahannock November 7-8. Rappahannock Station November 7 (Reserve). Mine Run Campaign November 26-December 2. Regiment reenlisted December 30, 1863. Veterans on furlough until February 11, 1864. Moved to Johnson's Island, Lake Erie, Ohio, January 6, 1864, and guard Rebel Prisoners at that place until May 6. Moved to Washington, D.C., May 9-13; thence to Belle Plains and guard Rebel Prisoners and escort trains to the front until May 23. 
* May 4-June 12, 1864 - The Overland Campaign
** 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
* Before Petersburg June 17-19. 
* Ream's Station, Weldon Railroad, June 22-23. 
* Siege of Petersburg until July 9. 
* Moved to Washington July 9-11. 
* July 12, 1864 - Action at Fort Stevens, District of Columbia
* Snicker's Gap Expedition July 14-18. 
* Operations in Shenandoah Valley until September. 
* Charlestown August 21. 
* Ordered home for muster out. 
* September 8, 1864 - Mustered out of federal service
** Veterans and Recruits transferred to 82nd Pennsylvania Infantry
== Regimental Roster ==
== Regiment Statistical Information ==
* Regiment lost during service 5 Officers and 110 Enlisted men killed and mortally wounded and 3 Officers and 70 Enlisted men by disease. Total 188.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 760, 761, 827, 897, 898, 899, 901, 902, 903, 904, 905, 932, 938, 939, 940, 941, 990, 1584-1585)
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