The 42nd New York Infantry Regiment, also called the Tammany Regiment, was a regiment of the Union Army during the American Civil War which was formed up in mid-1861 and mustered in on June 22, 1861. It was organized by the Tammany Club, a New York Democratic Party club.
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 21âÂÂ24, 1861. Action at Ball's Bluff October 21. Moved to Harper's Ferry, W. Va., thence to Charlestown and Berryville, Va., March 7âÂÂ13, 1862. Movement toward Winchester and return to Bolivar Heights March 13âÂÂ15. Moved to Fortress Monroe March 22 â April 1. Siege of Yorktown April 5 â May 4. Battle of Seven Pines or Fair Oaks May 31 â June 1. Tunstall Station June 14. Seven days before Richmond June 25 â July 1. Battles of Peach Orchard and Savage Station June 29; White Oak Swamp and Glendale June 30; Malvern Hill July 1. At Harrison's Landing until August 16. Movement to Alexandria August 16âÂÂ28, thence march to Fairfax Court House August 28âÂÂ31, and cover retreat of Pope's army to Washington August 31 â September 2. Maryland Campaign September 6âÂÂ22. Battle of Antietam September 16âÂÂ17. Moved to Harper's Ferry, W. Va., September 22, and duty there until October 30. Reconnaissance to Charlestown October 16âÂÂ17. Advance up Loudoun Valley and movement to Falmouth, Va., October 30 â November 17. Battle of Fredericksburg, Va., December 12âÂÂ15. "Mud March" January 20âÂÂ24, 1863. At Falmouth until April. Chancellorsville Campaign April 27 â May 6. Battle of Maryes Heights, Fredericksburg, May 3. Salem Heights May 3âÂÂ4.
Banks' Ford May 4. Gettysburg (Pa.) Campaign June 11 â July 24. Battle of Gettysburg, Pa., July 1âÂÂ4. Pursuit of Lee July 5âÂÂ24. Duty on line of the Rappahannock until October. Advance from the Rappahannock to the Rapidan September 13âÂÂ17. Bristoe Campaign October 9âÂÂ22. Bristoe Station October 14. Advance to line of the Rappahannock November 7âÂÂ8. Mine Run Campaign November 26 â December 2. Demonstration on the Rapidan February 6âÂÂ7, 1864. At Stevensburg until May. Campaign from the Rapidan to the James May 3 â June 15. Battles of the Wilderness May 5âÂÂ7; Laurel Hill May 8; Spottsylvania May 8âÂÂ12; Po River May 10; Spottsylvania Court House May 12âÂÂ21. Assault on the Salient or "Bloody Angle" May 12. North Anna River May 28âÂÂ26. On line of the Pamunkey May 26âÂÂ28. Totopotomoy May 28âÂÂ31. Cold Harbor June 1âÂÂ12. Before Petersburg June 16âÂÂ18. Siege of Petersburg June 16 to July 13. Jerusalem Plank Road June 22âÂÂ23.
Mustered out July 13, 1865. Veterans and Recruits transferred to 82nd Regiment New York Infantry.
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.
http://www.civilwararchive.com/Unreghst/unnyinf4.htm