The Queen Mother had long-standing relationships with many regiments which formed part of the funeral procession.
Her coffin was followed by representatives of the following 10 regiments and units:
1st The Queen's Dragoon Guards
Also known as the Welsh Cavalry, the regiment has its origins in units founded in 1685 by James II. Its members are mainly recruited from Wales, Herefordshire and Shropshire.
The regiment's most important commemorative date is the anniversary of the Battle of Waterloo against Napoleon in 1815.
The Queen Mother presented a new standard to the regiment in May 1996. Five of its soldiers have been awarded the Victoria Cross, the UK's highest military honour.
Queen's Royal Hussars
With its origins more than 300 years ago, the Queen's Royal Hussars was formed when the Queen Own Hussars and Queen's Royal Irish Hussars merged in 1993. The regiment celebrates St Patrick's Day.
The regiment holds 172 battle honours including the Battle of Derringen in 1743, the last time a British monarch led forces into battle.
In 1988 the Queen Mother presented the regiment with a new mascot, a grey Clydesdale Drum Horse called Peninsula.
9th/12th Royal Lancers (Prince of Wales')
Formed in 1960 from the amalgamation of two regiments, it has its origins in 1715 during the Stuart uprising against King George I.
The regiment has been long associated with service in Ireland and India, where its soldiers became known as "the Delhi Spearmen".
Since amalgamation the Regiment has had an armoured reconnaissance role and it draws most of its recruits from Northamptonshire, Derbyshire and Leicestershire.
The King's Regiment
The regiment was formed in 1685 and is based in northern England. While it recruits from all over the UK, it is also the army's only "city regiment", drawing soldiers from Liverpool and Manchester.
The regiment has seen active service throughout the world and its modern role is as an armoured infantry battalion. In total, 23 Victoria Crosses have been awarded to members of the regiment since 1900.
Royal Anglian Regiment
The Royal Anglian Regiment draws its soldiers from 10 counties in East Anglia and the East Midlands, its history dating back to 1685. Its origins lie in country regiments raised during the 17th century and amalgamated over the years to their present form. The regiment maintains ties with these eastern counties and its soldiers have served throughout the world, most recently as part of the intervention force in Sierra Leone.
The Light Infantry
The Light Infantry is one of the largest regiments in the British Army and emerged out of the colonial wars between France and the UK and the North American independence drive in the 18th century. One of its commanders during this period was General Sir John Moore, recognised as one of the most important strategists in British military history.
The Queen Mother became Colonel in Chief of the new regiment following amalgamations in 1968.
The Black Watch (Royal Highland Regiment)
The Black Watch is one of the most historic regiments in the British Army. It began life in 1725 when it was raised an independent companies and became a fully fledged regiment in 1739.
It first saw overseas service at Guadaloupe in 1759 and its soldiers have since been in action all over the world.
During the Second World War it was part of the army contingents that pushed up through north Africa into Italy before it was moved to the war against Japan in south-east Asia.
Royal Army Medical Corp
The RAMC began life with the formation of the regular army in 1660.
Its motto, "In Arduis Fidelius" means 'Steadfast in Adversity' and its members have won 31 Victoria Crosses over the years. One former member won both the VC and the Iron Cross from Germany for saving the lives of its soldiers.
The Royal Yeomanry
Based at the Cavalary House, Chelsea, the Royal Yeomanry was formed in 1967 from the amalgamation of five county regiments. It is now a reserve nuclear, biological and chemical warfare regiment, specialising in tackling scenarios involving these weapons.
68 (Inns of Court & City Yeomanry) Signal Squadron
This squadron of approximately 100 servicemen and women provides communications for the London headquarters of the army and wider Land Forces. The City of London Yeomanry began its military history in the Boer War in South Africa. Signal squadrons have played an increasingly important role in modern military planning.