Battery C lost 2 enlisted men killed and 12 to disease during the Civil War.

1861
Organized at Philadelphia under Captain Jeremiah McCarthy
August 5 Moved to Washington, D.C.
Duty at Camp Barry and in the Defenses of Washington.
October Attached to W. F. Smith’s Division, Army Potomac
1862
March Ordered to the Virginia Peninsula. Attached to Artillery, 1st Division, 4th Army Corps, Army Potomac
April 5-May 4 Siege of Yorktown
May 5 Battle of Williamsburg
May 31-June 1 Battle of Fair Oaks or Seven Pines
June 25-July 1 Seven Days before Richmond
June 29 James River Road near Fair Oaks and Savage Station
June 30 Charles City Cross Roads and Glendale
July 1 Malvern Hill
July-August At Harrison’s Landing
August 16-24 Movement to Fortress Monroe, then to Alexandria. Attached to Artillery, 3rd Division, 6th Army Corps, Army Potomac
September Maryland Campaign
September 16-17
Battle of Antietam

The battery was armed with four 10-pounder Parrott rifles. It  did not arrive on the field until after the battle.

September – October Duty in Maryland
October 8 Captain McCarthy discharged
October 29 – November 19 Movement to Falmouth, Va.
December 12-15
Battle of Fredericksburg
1863
January 20-24 “Mud March”
April 27-May 6 Chancellorsville Campaign
April 29-May 2 Operations at Franklin’s Crossing
May 3
Maryes Heights, Fredericksburg

Attached to Artillery Brigade, 6th Corps

May 3-4
Salem Heights
May 4 Banks’ Ford
June Ordered to Washington, D.C. Attached to Camp Barry, Defenses of Washington, D.C., 22nd Corps
July 9 Moved to Maryland Heights and duty at Harper’s Ferry. W. Va. attached to 1st Brigade, Lockwood’s Division, Dept. Susquehanna
August Attached to Maryland Heights Division, Dept. West Virginia
October 23 Consolidated with Battery “D,” 1st Pennsylvania Artillery
1864
December Second Battery C organized. Duty at Harper’s Ferry, Martinsburg and in the Shenandoah Valley. Attached to 3rd Infantry Division, West Virginia
1865
April Attached to 2nd Infantry Division, West Virginia
June 30 Mustered out