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. 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, 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the Anzac Mounted Division formed part of Desert Column, Egyptian Expeditionary Force in World War I. The division was originally made up of the Australian 3rd Light Horse Brigade, the reconstituted 4th Light Horse Brigade, and two British yeomanry brigades; the 5th Mounted Brigade and 6th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.
Horse artillery was a type of light, fast-moving, and fast-firing field artillery that consisted of light cannons or howitzers attached to light but sturdy two-wheeled carriages called caissons or limbers, with the individual crewmen riding on horses. This was in contrast to other forms of field artillery which may also be horse-drawn but were heavier and whose gunners either marched on foot or were transported seated on the gun carriage, wagons or limbers. Horse artillery units provided highly mobile fire support especially to cavalry units, and existed in armies in Europe, the Americas, and Asia, from the early 17th to the mid-20th century.
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 Northumberland Hussars was a Yeomanry regiment of the British Army, transferred to the Royal Artillery for the duration of the Second World War. It was disbanded as an independent Territorial Army unit in 1967, a time when the strength of the Territorial Army was greatly reduced. The regiment's name lives on in the title of the command and support squadron of the Queen's Own Yeomanry (QOY), a Formation Reconnaissance Regiment based in Newcastle upon Tyne.
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 Shropshire Yeomanry was a yeomanry regiment of the British Army, first raised in 1795, which served as a cavalry and dismounted infantry regiment in the First World War and as a cavalry and an artillery regiment in the Second World War. It was then amalgamated with the Shropshire Royal Horse Artillery.
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 Lancashire Hussars was a British Army unit originally formed in 1798. It saw action in the Second Boer War, the First World War and the Second World War. In 1969, the regiment reduced to a cadre and the Yeomanry lineage discontinued.
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 Duke of York's Own Loyal Suffolk Hussars was a Yeomanry regiment of the British Army. Originally formed as a volunteer cavalry force in 1793, it fought in the Second Boer War as part of the Imperial Yeomanry. In the World War I the regiment fought at Gallipoli, in Palestine and on the Western Front. The unit was subsequently converted into a Royal Artillery unit, serving in the anti-tank role North Africa, Italy and France during World War II. The lineage is maintained by No. 677 Squadron AAC.
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.
A Battery, Honourable Artillery Company is a L118 light gun battery that provides a reserve to 7th Parachute Regiment Royal Horse Artillery. Its predecessor was a horse artillery battery that was formed from Light Cavalry Squadron, HAC, in 1891. It transferred to the Territorial Force in 1908 as artillery support for the London Mounted Brigade.
B Battery, Honourable Artillery Company was a horse artillery battery that was formed from the Field Artillery, HAC in 1899. It transferred to the Territorial Force in 1908 as artillery support for the South Eastern Mounted Brigade.
The Company of Pikemen and 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