|September||Organized in Washington. Duty in the Defenses of Washington, D. C. attached to Artillery, McCall’s Division, Army of the Potomac.|
|March||Attached to Artillery, 2nd Division, 1st Army Corps, Army of the Potomac|
|April||Attached to Dept. of the Rappahannock|
|April 9-19||Advance on Falmouth, Va.|
|May 25-28||McDowell’s advance on Richmond|
|June||Ordered to the Virginia Peninsula and attached to Artillery, 3rd Division, 5th Army Corps, Army Potomac|
|June 25-July 1||Seven days before Richmond|
|June 27||Gaines’ Mill|
|July 1||Malvern Hill|
|July-August||At Harrison’s Landing|
|August 16-28||Movement to Fort Monroe, then to Centreville, Va.|
|August 28-September 2||Pope’s Campaign in Northern Virginia. Attached to Artillery, 3rd Division, 3rd Corps, Army Virginia|
|August 29||Battle of Groveton|
Second Battle of Bull Run
|September 6-22||Maryland Campaign. Attached to Artillery, 3rd Division, 1st Army Corps, Army Potomac|
|September 14||South Mountain, Md.|
Commanded by Captain Dunbar Ransom, Lieutenants Weir and Gansevoort. The battery lost 2 men killed and 13 wounded.
From the War Department marker on the Antietam battlefield:
On the evening of September 16, Battery C, 5th U.S. Artillery came into battery 370 yards east of the Hagerstown Pike and opened fire on a Confederate Battery in the open field west of the Pike and north of the Dunkard Church, causing it to retire. After dark the Battery was withdrawn and bivouacked 75 yards east of J. Poffenberger’s barn.
On the morning of the 17th, the Battery advanced to a position 205 yards due east of this point and engaged the Confederate Infantry which had made a lodgement in Miller’s Cornfield. The Battery was supported by Anderson’s and Magilton’s Brigades of Meade’s Division and Gordon’s Brigade of the Twelfth Corps. After the repulse of the Confederate advance the Battery retired to its bivouac of the 16th.
|October 30-November 19||Movement to Falmouth, Va.|
Battle of Fredericksburg
|January 20-24||“Mud March”|
|February||At Falmouth. Attached to Artillery, 2nd Division, 1st Army Corps|
|April 27-May 6||Chancellorsville Campaign|
|April 29-May 2||Operations at Pollock’s Mill Creek|
|April 29-30||Fitzhugh’s Crossing|
|May||Attached to 1st Regular Brigade, Artillery Reserve, Army of the Potomac|
The battery was commanded by Lieutenant Gulian V. Weir. It brought six 12 Pounders to the field. Lieutenant Homer Baldwin was one of the wounded, struck by a fragment when an artillery chest blew up from a direct hit during the bombardment before Pickett’s Charge on July 3.
From the monument on Hancock Avenue:
July 2 Arrived at Gettysburg from near Taneytown and in the afternoon was ordered to the front and by direction of Major General W.S. Hancock took position 500 yards further to the front and by order of Brig. General John Gibbon opened fire on the Confederates on the left front. The Confederates in front advanced to within a few yards no infantry opposing. Three of the guns were captured by the Confederates and drawn off to the Emmitsburg Road but were recaptured by the 13th Vermont and another regiment.
July 3 In the rear of the line until Longstreet’s Assault was made when the Battery was moved up to Brig. General A.S. Webb’s line and opened with canister at short range on the advancing Confederates. At 6:30 p.m. returned to the Artillery Reserve.
Casualties: killed 2 men wounded 2 officers and 12 men.
|July 3-15||Draft riots in New York|
|July||At Camp Barry, Washington, D.C., 22nd Army Corps|
|November||Consolidated with Battery I and attached to Artillery Brigade, 2nd Army Corps, Army Potomac|
|November 26-December 2||Mine Run Campaign|
|May 4-June 12||Rapidan Campaign|
|May 10||Po River|
|May 12||Assault on the Salient|
|May 22-26||North Anna River|
|May 26-29||On line of the Pamunkey|
|June 16-18||Assault on Petersburg|
|June 16-April 2||Siege of Petersburg|
|June 22||Jerusalem Plank Road|
|July 27-29||Deep Bottom|
|August 18-21||Weldon Railroad|
|October 27-28||Boydton Plank Road, Hatcher’s Run|
|March 25||Fort Stedman|
|March||Attached to Artillery Reserve, Army Potomac|
|March 28-April 9||Appomattox Campaign|
|April 2||Assault on and fall of Petersburg|
|May||Moved to Washington, D.C.|
|May 23||Grand Review|
|June||Duty at Washington, D.C.|