The battery lost 14 enlisted men killed or mortally wounded and 4 enlisted men to disease during the Civil War. It is honored by a monument at Gettysburg.

1861
Organized at New York City. Originally organized as Company D, 2nd Regiment New York State Militia, later known as 82nd Regiment Infantry.
May 18 Left State for Washington, D.C.
June 17 Mustered in at Washington
June Detached and converted into a Light Battery known as Battery B, New York Artillery under the command of Captain Thaddeus P. Mott. assigned to duty in the Defenses of Washington, D. C. attached to Schenck’s Brigade, Tyler’s Division, McDowell’s Army of Northeast Virginia.
July 16-21 Advance on Manassas, Virginia.
July 21
Battle of Bull Run
August Duty in the Defenses of Washington attached to W. F. Smith’s Brigade, Division of the Potomac
September 11 Reconnaissance to Lewinsville
September 25 Reconnaissance to Lewinsville
October Attached to Hancock’s Brigade, Smith’s Division, Army of the Potomac
December 7 Designated 3rd New York Battery.
1862
March Attached to Smith’s 2nd Division, 4th Army Corps, Army of the Potomac
March 23 Ordered to Fortress Monroe, Va.
April 5-May 4 Siege of Yorktown
April 16 Lee’s Mills
May 5 Battle of Williamsburg
May Attached to Artillery, 2nd Division, 6th Army Corps
June 25-July 1 Seven days before Richmond
June 27-28
Garnett’s and Golding’s Farms
June 29
Savage Station
June 30
White Oak Swamp and Glendale
July 1
Malvern Hill
July-August At Harrison’s Landing. Captain Mott resigned and Lieutenant William Stuart was promoted to captain.
August 16-24 Moved to Fortress Monroe, then to Alexandria
September 6-22 Maryland Campaign.
September 13 Attached to Artillery, 1st Division, 4th Corps, temporarily attached to the 6th Corps
September 14
Crampton’s Pass, South Mountain
September 16 Lee’s Mills
September 16-17
Antietam Campaign

The battery was armed with two 12-pounder Napoleons and four 10-pounder Parrott Rifles.

September 19 At Hagerstown, Maryland
September 26 The 1st Division, 4th Corps was redesignated 3rd Division, 6th Army Corps
October 29-November 19 Movement to Falmouth, Virginia.
November Attached to Artillery, 2nd Division, 6th Army Corps
December 12-15
Battle of Fredericksburg
1863
January Attached to Artillery, Light Division, 6th Army Corps
January 20-24 “Mud March”
February-April At Falmouth. Captain Stuart was dismissed and William A. Harn was promoted to captain.
April 27-May 6 Chancellorsville Campaign
April 29-May 2 Operations at Franklin’s Crossing
May 8
Maryes Heights, Fredericksburg
May 3-4
Salem Heights
May Attached to Artillery, 2nd Division, 6th Army Corps
June 5-13 Deep Run Crossing
June Attached to Artillery Brigade, 6th Army Corps
July 2-4
Battle of Gettysburg

Under the command of Captain Wiliam A. Harn, force marched 36 miles to arrive on the battlefield, bringing 119 men and six 10-pounder Parrott Rifles. Was in reserve and not engaged.

July 5 Fairfield, Pa.
July 10-13 Funkstown, Md.
July-October On line of the Rappahannock and Rapidan
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
1863
May 3-June 15 Campaign from the Rapidan to the James
May 5-7
Battle of the Wilderness
May 8-21
Battle of Spotsylvania Court House
May 12 Assault on the Salient, “Bloody Angle”
May 23-26 North Anna River
May 26-28 On line of the Pamunkey
May 28-31 Totopotomoy
June 1-12
Battle of Cold Harbor
June 18-19 First Assault on Petersburg
June 18- April 2 Siege of Petersburg
June 22-23 Jerusalem Plank Road, Weldon Railroad
July 10 Attached to Artillery Reserve, Army of the Potomac
December Attached to Artillery Brigade, 6th Army Corps
1865
March 25 Fort Fisher, Petersburg
March 28-April 9 Appomattox Campaign
April 2 Assault and capture of Petersburg
April 6 Sailor’s Creek
May 7 High Bridge
April 9
Appomattox Court House

Surrender of Lee and his army.

April 23-27 Moved to Danville
May 18-June 2 Moved to Richmond, then to Washington, D.C.
June 8 Corps Review
June 24 Mustered out