Its commanders were Captains G. Wilmer Brown, M.W. Henry, and William M. McGregor.
|September 18||The 2nd Company, Stuart Horse Artillery was created by dividing the original Stuart Horse Artillery into two, with the new 2nd Company under the command of Captain Matthias W. Henry. The battery was on the Antietam battlefield at the time, having been engaged the day before. Like its sister company it was assigned to the Horse Artillery Battalion, Cavalry Division, Army of Northern Virginia. The battery withdrew across the Potomac to Virginia.|
Raid on Dumfries and Fairfax Station
|February 15||Captain Henry was promoted to major and was assigned to command of the artillery in Hood’s Division. Lieutenant Wiliam McGregor was promoted to captain and took command of the battery.|
The battery was under the command of Captain William McGregor. It brought 106 men to Gettysburg equipped with two Napoleons and two 3″ Ordnance Rifles.
From the War Department tablet to the battery on the East Cavalry Field at Gettysburg:
July 3. The Battery took an active part in the fight arriving about 2 P. M. and keeping up its fire until the ample supply of ammunition furnished on its way here in the forenoon was exhausted. It withdrew from the field under orders about nightfall.
Losses Killed 5 Wounded 7 Total 12
Battles of Funkstown and Boonesboro
|August 21||Captain McGregor left on leave.|
|September||Stuart’s cavalry command was expanded to a corps. The battery was assigned to the Horse Artillery Battalion, Cavalry Corps, Army of Northern Virginia.|
Mine Run Campaign
The battery was armed with four 3″ Ordnance Rifles.
|November||Captain McGregor returned from leave.|
|February 18||Captain McGregor was promoted to major and took command of the battalion. Lieutenant George Wilmer Brown was promoted to captain and commanded the battery until its surrender.|
|March||Assigned to the McGregor’s Battalion, Horse Artillery, Cavalry Corps, Army of Northern Virginia.|
|March-April||Assigned to the Thomson’s Battalion, Horse Artillery, Cavalry Corps, Army of Northern Virginia.|
Only two men of the battery surrendered with Lee’s army.