|The Stuart Horse Artillery was originally created as the Newtown Artillery.|
|November||Converted to Horse Artillery and assigned to the Cavalry Brigade of the Potomac District, Department of Northern Virginia.|
|March 23||Captain John Pelham (West Point Class of 1861) was given command of the battery. It was assigned to the Cavalry Brigade of the Army of Northern Virginia.|
Stuart’s First Ride Around McClellan
|June 25-July 1||
Seven Days Battles
|July||Assigned to the Horse Artillery Battalion, Cavalry Division, Army of Northern Virginia.|
|July 5-7||Operations against Federal Shipping on the James River|
The battery was commanded by Captain Breathed and brought eight guns to the field. It was posted on the far left flank of the army.
|September 18||Before retreating across the Potomac the Stuart Horse Artillery was split into two batteries of four guns each, the 1st Company under Captain Breathed and the Second Company under Captain William McGregor.|
|September 22||Captain Pelham was promoted to major. First Lieutenant James Breathed was promoted to captain and took command of the battery.|
Raid on Dumfries and Fairfax Station
The battery was commanded at Gettysburg by Captain Breathed. It was equipped with four 3″ Ordnance Rifles.
From the War Department marker to the battery on the East Cavalry Field at Gettysburg:
July 3. The Battery arrived here about 2 P. M. and took an active part in the fight until its ample supply of ammunition received in the forenoon was exhausted. It was withdrawn from the field about dark.
Losses Killed 6 Wounded 8 Total 14 Horses killed or disabled 10.
Funkstown and Boonesborough
|September||Stuart’s cavalry command was enlarged to a corps, and the battery was assigned to the Horse Artillery Battalion, Cavalry Corps, Army of Northern Virginia.|
Near Brandy Station
Mine Run Campaign
|November 2||Lieutenant Philip P. Johnston was wounded.|
|February 27||Captain Breathed was promoted to major. Lieutenant Philip Johnston was promoted to captain and took command of the battery.|
|May 9||Shady Grove|
|October||Assigned to Horse Artillery Battalion, Rosser’s Cavalry Division, Army of the Valley|
The battery’s guns were lost in the retreat after the battle when the escape route of Early’s army was blocked by a bridge that was broken west of Strasburg.
|March||Assigned to Horse Artillery Battalion, Lomax’s Cavalry Division, Army of the Valley|
|March-April||Assigned to Breathed’s Battalion, Horse Artillery, Cavalry Corps, Army of Northern Virginia|