Four Companies organized at New York City and mustered in December 9, 1861. Left State for Washington, D.C., December 16, 1861. Companies consolidated December 21, 1861. "B" and "D" forming new Battery "A," and "A" and "C" forming new Battery "B." Duty in Defenses of Washington to March, 1862. Battery "A" attached to Richardson's 1st Division, 2nd Army Corps, Army of the Potomac, March to May, 1862; then Sections detached as follows: 1st Section attached to Battery "C" 4th United States Artillery; 2nd Section to Battery "B" 1st New York Light Artillery, serving with 1st Division, 2nd Army Corps, and 3rd Section to Battery "G" 1st New York Light Artillery, serving with 3rd Division, 2nd Army Corps, to October, 1862.
SERVICE.--Siege of Yorktown, Va., April 5-May 4, 1862. Battle of Fair Oaks, Seven Pines, May 31-June 1. Seven days before Richmond June 25-July 1. Battles of Gaines Mill June 27. Peach Orchard and Savage Station June 29. White Oak Swamp and Glendale June 30. Malvern Hill July 1. Duty at Harrison's Landing until August 16. Movement to Fortress Monroe, thence to Alexandria and Centreville August 16-30. Bull Run August 30. Centreville September 1. Germantown Road September 2. Battle of Antietam September 16-17. Duty at Harper's Ferry, W. Va., until October. Near Charlestown October 16-17. Designated 14th New York Independent Battery Light Artillery October, 1862 (which see).
Battery "B" attached to Williams' Division, Banks' 5th Corps, to April, 1862. Doubleday's Brigade, Dept. of the Rappahannock, to June, 1862. Reserve Artillery, Army of Virginia, to September, 1862. At Relay House, Md., 8th Army Corps, Middle Department, to October, 1862. Designated 15th New York Independent Battery Light Artillery October, 1862.