carriages called Wursts ("sausages"), rather than on separate horses, into battle. Hanover formed its first cavalry batteries in 1786 and the Hanoverian general Victor von Trew performed several trials in 1791 which proved the great speed and efficiency by which an all-mounted crew could operate. At this time Denmark had also formed mounted artillery units and by 1792 Sweden had formed its first regular riding batteries, followed by Great Britain and the Dutch Republic in 1793, Russia in 1794 and Portugal in 1796. 19th century zenith During the Napoleonic Wars, horse artillery would be used extensively and effectively in every major battle and campaign. The largest and probably most efficient horse artillery of any nation was that of the French revolutionary army which was first formed in 1792. The French units were especially well-trained and disciplined since the newly formed arm had proved very popular and could draw on a considerable number of recruits. By 1795 it had grown to eight regiments of six six-gun batteries each, making it the largest horse artillery force ever assembled. Horse artillery units generally used lighter pieces (6-pounders), pulled by six horses. 9-pounders were pulled by eight horses, and heavier artillery pieces (12-pounders) needed a team of twelve horses. With the individual riding horses required for officers, surgeons and other support staff, as well as those pulling the artillery guns and supply wagons, an artillery battery of six guns could require 160 to 200 horses. Horse artillery usually came under the command of cavalry divisions, but in some battles, such as Waterloo, horse artillery was used as a rapid response force, repulsing attacks and assisting the infantry. Agility was important; the ideal artillery horse was around 15-16 hands high (150–160 cm, 60 to 64 inches), strongly built, but able to move quickly. In the Mexican–American War, the U.S. Army horse artillery, or "flying artillery" played a decisive role in several key battles. In the American Civil War, various elements of the horse artillery of the Army of the Potomac were at times grouped together in the U.S. Horse Artillery Brigade. In the U.S., units of horse artillery were generally referred to officially as "light artillery". During the 19th and early 20th century, European-style horse artillery was used in South American countries such as Chile and Peru, quite prominently during the War of the Pacific. Modern decline As technology advanced and the firepower of infantry