
The 4th Queen's Own Hussars was a cavalry regiment in the British Army, first raised in 1685. It saw service for three centuries, including the First World War and the Second World War. It amalgamated with the 8th King's Royal Irish Hussars, to form the Queen's Royal Irish Hussars in 1958.

The 4th Royal Irish Dragoon Guards was a cavalry regiment in the British Army, first raised in 1685 as the Earl of Arran's Regiment of Cuirassiers. It was renamed as the 4th Dragoon Guards in 1788 and service for two centuries, including the First World War, before being amalgamated with 7th Dragoon Guards, to form the 4th/7th Dragoon Guards in 1922.

The 5th Dragoon Guards was a British army cavalry regiment, officially formed in January 1686 as Shrewsbury's Regiment of Horse. Following a number of name changes, it became the 5th Regiment of Dragoon Guards in 1804.

The 6th (Inniskilling) Dragoons was a cavalry regiment in the British Army, first raised in 1689 as Sir Albert Cunningham's Regiment of Dragoons. One of the regiment's most notable battles was the Battle of the Boyne in July 1690. It became the 6th (Inniskilling) Regiment of Dragoons in 1751. The regiment also fought with distinction in the Charge of the Union Brigade at the Battle of Waterloo and again as part of the successful Charge of the Heavy Brigade against superior numbers at the Battle of Balaclava during the Crimean War. The First World War sounded the death knell for mounted cavalry as it became apparent that technology had moved forward with greater destructive power and made horsed cavalry redundant on the modern battlefield. The British Army reorganised and reduced its cavalry corps by disbanding or amalgamating many of its famous cavalry regiments. The Inniskillings was one of those affected. It saw service for two centuries, including the First World War, before being amalgamated with 5th Dragoon Guards to form 5th/6th Dragoons in 1922.

The 8th King's Royal Irish Hussars was a cavalry regiment in the British Army, first raised in 1693. It saw service for three centuries including the First and Second World Wars. The regiment survived the immediate post-war reduction in forces, and went on to distinguish itself in the battles of the Korean War, but was recommended for amalgamation in the 1957 Defence White Paper prepared by Duncan Sandys. The regiment was amalgamated with the 4th Queen's Own Hussars, to form the Queen's Royal Irish Hussars in 1958.

The 10th Royal Hussars was a cavalry regiment of the British Army raised in 1715. It saw service for three centuries including the First World War and Second World War but then amalgamated with the 11th Hussars to form the Royal Hussars in October 1969.

The 11th Hussars was a cavalry regiment of the British Army established in 1715. It saw service for three centuries including the First World War and Second World War but then amalgamated with the 10th Royal Hussars to form the Royal Hussars in 1969.

The 13th Hussars was a cavalry regiment of the British Army established in 1715. It saw service for three centuries including the Napoleonic Wars, the Crimean War and the First World War but then amalgamated with the 18th Royal Hussars, to form the 13th/18th Royal Hussars in 1922.

The Leicestershire Regiment was a line infantry regiment of the British Army, with a history going back to 1688. The regiment saw service for three centuries, in numerous wars and conflicts such as both World War I and World War II, before being amalgamated, in September 1964, with the 1st East Anglian Regiment, the 2nd East Anglian Regiment and the 3rd East Anglian Regiment to form the present day Royal Anglian Regiment, of which B Company of the 2nd Battalion continues the lineage of the Royal Leicestershire Regiment.

The 17th Lancers was a cavalry regiment of the British Army, raised in 1759 and notable for its participation in the Charge of the Light Brigade during the Crimean War. The regiment was amalgamated with the 21st Lancers to form the 17th/21st Lancers in 1922.

The 30th (Cambridgeshire) Regiment of Foot was an infantry regiment of the British Army, raised in 1702. Under the Childers Reforms it amalgamated with the 59th Regiment of Foot to form the East Lancashire Regiment in 1881.

The 31st (Huntingdonshire) Regiment of Foot was an infantry regiment of the British Army, raised in 1702. Under the Childers Reforms it amalgamated with the 70th (Surrey) Regiment of Foot to form the East Surrey Regiment in 1881.

The 42nd Regiment of Foot was a Scottish infantry regiment in the British Army also known as the Black Watch. Originally titled Crawford's Highlanders or the Highland Regiment and numbered 43rd in the line, in 1748, on the disbanding of Oglethorpe's Regiment of Foot, they were renumbered 42nd and in 1751 formally titled the 42nd (Highland) Regiment of Foot. The 42nd Regiment was one of the first three Highland Regiments to fight in North America. In 1881 the regiment was named The Royal Highland Regiment , being officially redesignated The Black Watch in 1931. In 2006 the Black Watch became part of the Royal Regiment of Scotland.

The 44th Regiment of Foot was an infantry regiment in the British Army, raised in 1741. Under the Childers Reforms it amalgamated with the 56th Regiment of Foot to form the Essex Regiment in 1881.

The 46th Regiment of Foot was an infantry regiment of the British Army, raised in 1741. Under the Childers Reforms it amalgamated with the 32nd (Cornwall) Regiment of Foot to form the Duke of Cornwall's Light Infantry in 1881, becoming the 2nd Battalion of the new regiment.
The 55th Regiment of Foot was a British Army infantry regiment, raised in 1755. After 1782 it had a county designation added, becoming known as the 55th (Westmorland) Regiment of Foot. Under the Childers Reforms it amalgamated with the 34th (Cumberland) Regiment of Foot to form the Border Regiment in 1881.
The 56th Regiment of Foot was an infantry regiment in the British Army, active from 1755 to 1881. It was originally raised in Northumbria as the 58th Regiment, and renumbered the 56th the following year when two senior regiments were disbanded. It saw service in Cuba at the capture of Havana in the Seven Years' War, and was later part of the garrison during the Great Siege of Gibraltar in the American Revolutionary War. During the French Revolutionary Wars it fought in the Caribbean and then in Holland. On the outbreak of the Napoleonic Wars the 56th raised a second battalion in 1804 as part of the anti-invasion preparations; both saw service in India and in the Indian Ocean, with the first capturing Réunion and Mauritius. A third battalion was formed in the later years of the war, but was disbanded after a brief period of service in the Netherlands.

The 57th Regiment of Foot was a regiment of line infantry in the British Army, raised in 1755. Under the Childers Reforms it amalgamated with the 77th Regiment of Foot to form the Middlesex Regiment in 1881.

The 68th (Durham) Regiment of Foot was an infantry regiment of the British Army, raised in 1758. Under the Childers Reforms it amalgamated with the 106th Bombay Light Infantry to form the Durham Light Infantry in 1881, the 68th Regiment becoming the 1st Battalion, and the 106th Regiment becoming the 2nd Battalion in the regular Army. It saw action during the Seven Years' War before being converted to Light Infantry in 1808, fighting with distinction in the Peninsular Army under Arthur Wellesley. It would go on to fight with some distinction during the Crimean War, was present during the Indian Mutiny and the New Zealand wars before returning to India between 1872 and 1888.

The 72nd Highlanders was a British Army Highland Infantry Regiment of the Line. Raised in 1778, it was originally numbered 78th, before being redesignated the 72nd in 1786. Under the Childers Reforms it amalgamated with the 78th (Highlanders) Regiment to form the 1st Battalion of the Seaforth Highlanders in 1881.

The 88th Regiment of Foot was an infantry Regiment of the British Army, raised in 1793. Under the Childers Reforms it amalgamated with the 94th Regiment of Foot to form the Connaught Rangers in 1881.

The 95th (Derbyshire) Regiment of Foot was a British Army infantry regiment, raised in 1823. Under the Childers Reforms, it amalgamated with the 45th (Nottinghamshire) Regiment of Foot to form the Sherwood Foresters in 1881.

The Buffs , formerly the 3rd Regiment of Foot, was a line infantry regiment of the British Army traditionally raised in the English county of Kent and garrisoned at Canterbury. It had a history dating back to 1572 and was one of the oldest regiments in the British Army, being third in order of precedence. The regiment provided distinguished service over a period of almost four hundred years accumulating one hundred and sixteen battle honours. In 1881, under the Childers Reforms, it was known as the Buffs and later, on 3 June 1935, was renamed the Buffs .

The Carabiniers was a cavalry regiment of the British Army. It was formed in 1685 as the Lord Lumley's Regiment of Horse. It was renamed as His Majesty's 1st Regiment of Carabiniers in 1740, the 3rd Regiment of Horse (Carabiniers) in 1756 and the 6th Regiment of Dragoon Guards in 1788. After two centuries of service, including the First World War, the regiment was amalgamated with the 3rd Dragoon Guards to form the 3rd/6th Dragoon Guards in 1922.

The Coldstream Guards is the oldest continuously serving regular regiment in the British Army. As part of the Household Division, one of its principal roles is the protection of the monarchy; due to this, it often participates in state ceremonial occasions. The Regiment has consistently provided formations on deployments around the world and has fought in the majority of the major conflicts in which the British Army has been engaged.

The Green Howards , frequently known as the Yorkshire Regiment until the 1920s, was a line infantry regiment of the British Army, in the King's Division. Raised in 1688, it served under various titles until it was amalgamated with the Prince of Wales's Own Regiment of Yorkshire and the Duke of Wellington's Regiment, all Yorkshire-based regiments in the King's Division, to form the Yorkshire Regiment on 6 June 2006.

The Grenadier Guards is an infantry regiment of the British Army. It can trace its lineage back to 1656 when Lord Wentworth's Regiment was raised in Bruges to protect the exiled Charles II. In 1665, this regiment was combined with John Russell's Regiment of Guards to form the current regiment, known as the 1st Regiment of Foot Guards. Since then, the regiment has filled both a ceremonial and protective role as well as an operational one. In 1900, the regiment provided a cadre of personnel to form the Irish Guards; while later, in 1915 it also provided the basis of the Welsh Guards upon their formation.

The King's Own Royal Regiment (Lancaster) was a line infantry regiment of the British Army. It served under various titles and fought in many wars and conflicts, including both the First and the Second World Wars, from 1680 to 1959. In 1959, the regiment was amalgamated with the Border Regiment to form the King's Own Royal Border Regiment.

The Lancashire Fusiliers was a line infantry regiment of the British Army that saw distinguished service through many years and wars, including the Second Boer War, the First and Second World Wars, and had many different titles throughout its 280 years of existence. In 1968 the regiment was amalgamated with the other regiments of the Fusilier Brigade – the Royal Northumberland Fusiliers, Royal Warwickshire Fusiliers and the Royal Fusiliers – to form the current Royal Regiment of Fusiliers.

The Queen's Own Cameron Highlanders or 79th Regiment of Foot was a line infantry regiment of the British Army, raised in 1793. It amalgamated with the Seaforth Highlanders to form the Queen's Own Highlanders in 1961.

The Rifle Brigade was an infantry rifle regiment of the British Army formed in January 1800 as the "Experimental Corps of Riflemen" to provide sharpshooters, scouts, and skirmishers. They were soon renamed the "Rifle Corps". In January 1803, they became an established regular regiment and were titled the 95th Regiment of Foot (Rifles). In 1816, at the end of the Napoleonic Wars, they were again renamed, this time as the "Rifle Brigade".

The Royal Fusiliers was a line infantry regiment of the British Army in continuous existence for 283 years. It was known as the 7th Regiment of Foot until the Childers Reforms of 1881.

The Royal Scots Greys was a cavalry regiment of the British Army from 1707 until 1971, when they amalgamated with the 3rd Carabiniers to form The Royal Scots Dragoon Guards.

The Royal Welch Fusiliers was a line infantry regiment of the British Army and part of the Prince of Wales' Division, founded in 1689 shortly after the Glorious Revolution. In 1702, it was designated a fusilier regiment and became The Welch Regiment of Fusiliers; the prefix "Royal" was added in 1713, then confirmed in 1714 when George I named it The Prince of Wales's Own Royal Regiment of Welsh Fusiliers. After the 1751 reforms that standardised the naming and numbering of regiments, it became the 23rd Foot.

The Scots Guards (SG) is one of the Foot Guards regiments of the British Army. Its origins lie in the personal bodyguard of King Charles I of England and Scotland. Its lineage can be traced back to 1642, although it was only placed on the English Establishment in 1686.

The West Yorkshire Regiment was an infantry regiment of the British Army. In 1958 it amalgamated with the East Yorkshire Regiment to form the Prince of Wales's Own Regiment of Yorkshire which was, on 6 June 2006, amalgamated with the Green Howards and the Duke of Wellington's Regiment to form the Yorkshire Regiment.