42nd New York Infantry

== Regimental History and Service Record ==
* "Tammany Regiment"
* "Jackson Guard"
Organized at Great Neck and mustered in June 22, 1861. Left State for Washington, D.C., July 18. Attached to Stone's Brigade, Division of the Potomac, October, 1861. Gorman's Brigade, Stone's Division, Army of the Potomac, to January, 1862. Burns' Brigade, Sedgwick's Division, Army of the Potomac, to March, 1862. 3rd Brigade, 2nd Division, 2nd Army Corps, Army of the Potomac, to March, 1864. 1st Brigade, 2nd Division, 2nd Army Corps, to July, 1864.
SERVICE.--Duty in the Defenses of Washington, D. C., until October, and on Upper Potomac to March, 1862. Operations on the Upper Potomac October 21-24, 1861. Action at Ball's Bluff October 21. Moved to Harper's Ferry, W. Va., thence to Charlestown and Berryville, Va., March 7-13, 1862. Movement toward Winchester and return to Bolivar Heights March 13-15. 
* Moved to Fortress Monroe March 22-April 1. 
* April 1-September 2, 1862 - The Peninsula Campaign
** April 5-May 4, 1862 - Siege of Yorktown, Virginia
** May 7, 1862 - Engagement at Eltham's Landing, VirginiaNot originally referenced on unit homepage
** May 31-June 1, 1862 - Battle of Seven Pines, Virginia 
** Tunstall Station June 14. 
** June 25-July 1, 1862 - The Seven Days Battles before Richmond, Virginia
*** June 29, 1862 - Battle of the Peach Orchard, Virginia
*** June 29, 1862 - Engagement at Savage's Station, Virginia
*** June 30, 1862 - Engagement at White Oak Swamp, Virginia
*** June 30, 1862 - Engagement at Glendale, Virginia
*** July 1, 1862 - Engagement at Malvern Hill, Virginia
At Harrison's Landing until August 16. Movement to Alexandria August 16-28, thence march to Fairfax Court House August 28-31, and cover retreat of Pope's army to Washington August 31-September 2. 
* September 3-20, 1862 - The Maryland Campaign
** September 17, 1862 - Battle of Antietam, Maryland
Moved to Harper's Ferry, W. Va., September 22, and duty there until October 30. Reconnaissance to Charlestown October 16-17. Advance up Loudoun Valley and movement to Falmouth, Va., October 30-November 17. Battle of Fredericksburg, Va., December 12-15. "Mud March" January 20-24, 1863. At Falmouth until April. 
* April 27-May 6, 1863 - The Chancellorsville Campaign
Battle of Maryes Heights, Fredericksburg, May 3. Salem Heights May 3-4. Banks' Ford May 4. 
* 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. Advance from the Rappahannock to the Rapidan September 13-17. Bristoe Campaign October 9-22. Bristoe Station October 14. Advance to line of the Rappahannock November 7-8.
* Mine Run Campaign November 26-December 2.
* Demonstration on the Rapidan February 6-7, 1864.
* At Stevensburg until May.
* 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 10, 1864 - Combat at Po River, 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
* Before Petersburg June 16-18. 
* Siege of Petersburg June 16 to July 13. 
* Jerusalem Plank Road June 22-23. 
* July 13, 1865 - Mustered out of federal service
** Veterans and Recruits transferred to 82nd New York Infantry
== Regimental Roster ==
== Regiment Statistical Information ==
* Regiment lost during service 11 Officers and 141 Enlisted men killed and mortally wounded and 1 Officer and 103 Enlisted men by disease. Total 256.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 761, 827, 897, 899, 901, 902, 903, 904, 905, 932, 933, 934, 935, 936, 938, 940, 941, 1419-1420)
42
42
42
42
42
42
42
42
42
42
42
42
42
42
42
42
42
42
42
42
42
42
42