For this article, “Company A” and “Battery A” are interchangeable. A battery of four to six cannons, with two to three two-cannon sections was the basic unit of the artillery branch. The organization
U.S. Army captain James Duncan of Illinois received three brevets—major, lieutenant-colonel, and colonel—for his actions in the Mexican War. Pictured in 1848 as colonel by Mathew Brady
An artillery duel during the Battle of Monterrey
Fair Oaks, Va., vicinity. Lieutenant Robert Clarke, Capt. John C. Tidball, Lieutenant William N. Dennison, and Capt. Alexander C.M. Pennington.
Harry Benson's Battery A, of the 2nd U.S. Artillery, and Horatio Gates Gibson's Batteries C and G, combined of the 3rd U.S. Artillery, near Fair Oaks, Virginia.
U.S. Horse Artillery Brigade
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The Horse Artillery Brigade of the Army of the Potomac was a brigade of various batteries of horse artillery during the American Civil War.
Battery A, 2nd U.S. Artillery
…Theater before the First Battle of Bull Run, and was outfitted as a horse artillery battery in September 1861. Among the most prominent units in the U.S. Horse Artillery Brigade was Battery A, serving under the command of Captain John Caldwell Tidball, of Virginia, who replaced Captain William F. Barry upon his own promotion…
Officers of the Horse Artillery Brigade at Fair Oaks, 1862. Photo by James F. Gibson. Library of Congress.
Officers of Combined Batteries B & L, 2nd U.S. Artillery, 1862. L-R: Wilson, Vincent, Robertson, Woodruff. Photo by James F. Gibson. Library of Congress
Battery M, 2nd U.S. Artillery, 1862. Photo by James F. Gibson. Library of Congress