Historically, cavalry are soldiers or warriors who fight mounted on horseback. Cavalry were the most mobile of the combat arms, operating as light cavalry in the roles of reconnaissance, screening, and skirmishing in many armies, or as heavy cavalry for decisive shock attacks in other armies. An individual soldier in the cavalry is known by a number of designations depending on era and tactics, such as a cavalryman, horseman, trooper, cataphract, knight, drabant, hussar, uhlan, mamluk, cuirassier, lancer, dragoon, or horse archer. The designation of cavalry was not usually given to any military forces that used other animals for mounts, such as camels or elephants. Infantry who moved on horseback, but dismounted to fight on foot, were known in the early 17th to the early 18th century as dragoons, a class of mounted infantry which in most armies later evolved into standard cavalry while retaining their historic designation.
Dragoons were originally a class of mounted infantry, who used horses for mobility, but dismounted to fight on foot. From the early 17th century onward, dragoons were increasingly also employed as conventional cavalry and trained for combat with swords and firearms from horseback. While their use goes back to the late 16th century, dragoon regiments were established in most European armies during the 17th and early 18th centuries; they provided greater mobility than regular infantry but were far less expensive than cavalry.
The Honourable Artillery Company (HAC) is a reserve regiment in the British Army. Incorporated by royal charter in 1537 by King Henry VIII, it is the oldest regiment in the British Army and is considered the second-oldest military unit in the world. Today, it is also a charity whose purpose is to attend to the "better defence of the realm", primarily through supporting the HAC regiment and a detachment of City of London Special Constabulary. The word "artillery" in "Honourable Artillery Company" does not have the current meaning that is generally associated with it, but dates from a time when in the English language that word meant any projectile, including for example arrows shot from a bow. The equivalent form of words in modern English would be either "Honourable Infantry Company" or "Honourable Military Company".
Yeomanry is a designation used by a number of units and sub-units in the British Army Reserve which are descended from volunteer cavalry regiments that now serve in a variety of different roles.
The Australian Mounted Division originally formed as the Imperial Mounted Division in January 1917, was a mounted infantry, light horse and yeomanry division. The division was formed in Egypt, and along with the Anzac Mounted Division formed part of Desert Column, Egyptian Expeditionary Force in World War I. The division was originally made up of the Australian 3rd Light Horse Brigade, the reconstituted 4th Light Horse Brigade, and two British yeomanry brigades; the 5th Mounted Brigade and 6th Mounted Brigade.
Public duties are performed by military personnel, and usually have a ceremonial or historic significance rather than an overtly operational role.
The Royal Gloucestershire Hussars was a volunteer yeomanry regiment which, in the 20th century, became part of the British Army Reserve. It traced its origins to the First or Cheltenham Troop of Gloucestershire Gentleman and Yeomanry raised in 1795, although a break in the lineage means that its formation is dated to the Marshfield and Dodington Troop raised in 1830. Six further troops – officered by nobility and gentry, and recruited largely from among landholders and tenant farmers – were subsequently raised in Gloucestershire, and in 1834 they came together to form the Gloucestershire Yeomanry Cavalry. In 1847, the regiment adopted a hussar uniform and the name Royal Gloucestershire Hussars. Originally intended to counter insurrection and a French invasion that never materialised, the yeomanry's first deployments were ceremonial and as mounted police during times of civil unrest. Three Gloucestershire troops were deployed to Bristol on two separate occasions in the 1830s in support of the civil authorities.
The Essex Yeomanry was a Reserve unit of the British Army that originated in 1797 as local Yeomanry Cavalry Troops in Essex. Reformed after the experience gained in the Second Boer War, it saw active service as cavalry in World War I and as artillery in World War II. Its lineage is maintained by 36 Signal Squadron, part of 71 (Yeomanry) Signal Regiment, Royal Corps of Signals.
The Queen's Own Oxfordshire Hussars (QOOH) was a Yeomanry Cavalry regiment of the British Army's auxiliary forces, formed in 1798. It saw service in the Second Boer War with 40 and 59 Companies of the Imperial Yeomanry and was the first Yeomanry regiment to serve in Belgium and France during the Great War. After almost four years of Trench warfare on the Western Front, where cavalry had been superfluous, the QOOH led the advance during the Allies' victorious Hundred Days Offensive in 1918. In 1922, the QOOHt became part of the Royal Artillery and during World War II it served as anti-tank gunners at Singapore and in North West Europe. After a series of postwar mergers and changes of role, the regiment's lineage is maintained by 142 Vehicle Squadron, Royal Logistic Corps.
The Cheshire Yeomanry was a yeomanry regiment that can trace its history back to 1797 when Sir John Leicester of Tabley raised a county regiment of light cavalry in response to the growing fears of invasion from Napoleonic France. Its lineage is maintained by C Squadron, the Queen's Own Yeomanry.
The North Somerset Yeomanry was a part-time cavalry regiment of the British Army from 1798 to 1967. It maintained order in Somerset in the days before organised police forces, and supplied volunteers to fight in the Second Boer War. It served on the Western Front in the First World War. At the outbreak of the Second World War, it continued to operate in the mounted role and then as a specialist signals unit. Postwar it joined the Royal Armoured Corps and later became infantry. Its lineage today is maintained by 93 Squadron 39 (Skinners) Signal Regiment.
The Queen's Own Worcestershire Hussars was a Yeomanry regiment of the British Army. First raised in 1794, it participated in the Second Boer War and World War I as horsed cavalry before being converted to an anti-tank regiment of the Royal Artillery for service in World War II. In 1956 it was amalgamated with the Warwickshire Yeomanry to form the Queen's Own Warwickshire and Worcestershire Yeomanry. The lineage is maintained by B Squadron, part of The Royal Yeomanry.
The South Nottinghamshire Hussars is a unit of the British Army formed as volunteer cavalry in 1794. Converted to artillery in 1922, it presently forms part of 103 Regiment, Royal Artillery.
The Yorkshire Hussars was an auxiliary unit of the British Army formed in 1794. The regiment was formed as volunteer cavalry (Yeomanry) in 1794 during the French Revolutionary Wars and served in the Second Boer War and the First World War. It was converted to an armoured role during the Second World War. In 1956, it merged with two other Yorkshire yeomanry regiments to form the Queen's Own Yorkshire Yeomanry. Its lineage is continued today by the Queen's Own Yeomanry.
The Queen's Own Yorkshire Dragoons was a yeomanry regiment of the British Army in existence from 1794 to 1956. It was formed as a volunteer cavalry force in 1794 during the French Revolutionary Wars. Its volunteer companies played an active role with the Imperial Yeomanry in the Second Boer War, but opportunities for mounted action were much more restricted during the First World War and it was temporarily converted into a cycle unit. It remained a cavalry regiment throughout the interwar years, and was the last horsed unit of the British Army to see action, in the Syria–Lebanon Campaign of 1941, finally mechanising the following year. It served as motorised infantry in the North African and Italian campaigns of the Second World War. In 1956, it merged with the Yorkshire Hussars and the East Riding of Yorkshire Yeomanry to form the Queen's Own Yorkshire Yeomanry. Its lineage is continued today by A Squadron, the Queen's Own Yeomanry.
The Denbighshire Hussars was a Welsh Yeomanry regiment of the British Army formed in 1794. It saw service in the First World War before being converted into a unit of the Royal Artillery. The lineage has been continued by 398 Squadron, Royal Logistic Corps.
The Royal Buckinghamshire Yeomanry is an Operational Hygiene Squadron of the Royal Logistic Corps, originally formed as cavalry in 1794, and has also served in artillery and signals roles. The lineage is continued by 710 Operational Hygiene Squadron, Royal Logistic Corps.
The Westmorland and Cumberland Yeomanry was a Yeomanry Cavalry regiment of the British Army with its origins in 1798. The regiment provided troops for the Imperial Yeomanry during the Second Boer War and served on the Western Front in the First World War, latterly as infantry. The regiment converted to artillery in 1920 and served as such in the early years of the Second World War, before becoming part of the Chindits in Burma. Postwar it served as a gunner regiment until 1971 when the title disappeared.
The Pembroke Yeomanry was an auxiliary regiment of the British Army dating back to 1794. It saw active service in the French Revolutionary War, the Second Boer War, World War I and World War II. Its lineage is maintained by 224 Transport Squadron, part of 157 (Welsh) Regiment RLC in the Army Reserve.
The Company of Pikemen & Musketeers is a ceremonial unit of the Honourable Artillery Company (HAC), which provides a regiment for the Army Reserve and is associated with the City of London. The HAC is the oldest regiment in the British Army, though not the most senior.
United Kingdom 
British Army