42nd New York Volunteer Infantry Regiment The 42nd New York Volunteer Infantry 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 . Service . 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 . Siege of Yorktown April 5 - May 4 . Battle of Seven Pines or Fair Oaks May 31 - June 1 . Tunstall Station June 14 . Seven days before Richmond June 25 - 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 16 – 28 , thence march to Fairfax Court House August 28 – 31 , and cover retreat of Pope ' s army to Washington August 31 - September 2 . Maryland Campaign September 6 – 22 . Battle of Antietam September 16 – 17 . 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 . Chancellorsville Campaign April 27 - May 6 . Battle of Maryes Heights , Fredericksburg , May 3 . Salem Heights May 3 – 4 . Banks ' Ford May 4 . Gettysburg ( Pa . ) Campaign June 11 - July 24 . Battle of Gettysburg , Pa . , July 1 – 4 . 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 . Campaign from the Rapidan to the James May 3 - June 15 . Battles of the Wilderness May 5 – 7 ; Laurel Hill May 8 ; Spottsylvania May 8 – 12 ; Po River May 10 ; Spottsylvania Court House May 12 – 21 . Assault on the Salient or " Bloody Angle " May 12 . North Anna River May 28 - 26 . On line of the Pamunkey May 26 – 28 . Totopotomoy May 28 – 31 . Cold Harbor June 1 – 12 . Before Petersburg June 16 – 18 . Siege of Petersburg June 16 to July 13 . Jerusalem Plank Road June 22 – 23 . 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 . References . http : / / www . civilwararchive . com / Unreghst / unnyinf4 . htm