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the Anzac Mounted Division formed part of Desert Column, Egyptian Expeditionary Force in World War I. The division was originally made up of the Australian 3rd Light Horse Brigade, the reconstituted 4th Light Horse Brigade, and two British yeomanry brigades; the 5th Mounted Brigade and 6th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.
The 1st Cavalry Division was a regular Division of the British Army during the First World War where it fought on the Western Front. During the Second World War it was a first line formation, formed from Yeomanry Regiments. It fought in the Middle East before being converted to the 10th Armoured Division.
The 4th Cavalry Brigade was a cavalry brigade of the British Army. It served in the Napoleonic Wars, in the First World War on the Western Front where it was initially assigned to The Cavalry Division before spending most of the war with the 2nd Cavalry Division, and with the 1st Cavalry Division during the Second World War.
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 2nd Cavalry Division was a division of the regular British Army that saw service in the Peninsular War and in World War I, when it also known as Gough's Command, after its commanding general. It was part of the British Expeditionary Force that served in France in from 1914 to 1918. It was involved in most of the major actions where cavalry were used as a mounted mobile force, and also many where the troops were dismounted and effectively served as infantry.
The 3rd Cavalry Division was a division of the British Army in the First World War. It was formed at Ludgershall, Wiltshire England in September 1914 under the command of Major-General the Hon. Julian Byng. The division moved to Belgium in the first week of October 1914, landing at Ostend, although its third Brigade was only formed there once. During the war the division took part in most of the major actions where cavalry were used as a mounted mobile force, and also many where the troops were dismounted and effectively served as infantry.
The Guards Division was an infantry division of the British Army that was formed in the Great War in France in 1915 from battalions of the Guards regiments from the Regular Army. The division served on the Western Front for the duration of the First World War. The division's insignia was the "All Seeing Eye".
The 9th Cavalry Brigade was a cavalry brigade of the British Army in World War I. It was formed in France in 1915 and served on the Western Front as part of the 1st Cavalry Division until the end of the war.
The 8th Cavalry Brigade was a cavalry brigade of the British Army in World War I. It was formed in Belgium in 1914 and served on the Western Front as part of the 3rd Cavalry Division. It left the 3rd Cavalry Division on 14 March 1918.
The British cavalry were the first British Army units to see action during the First World War. Captain Hornby of the 4th Dragoon Guards is reputed to have been the first British soldier to kill a German soldier, using his sword, and Corporal Edward Thomas of the same regiment is reputed to have fired the first British shot shortly after 06:30 on 22 August 1914, near the Belgian village of Casteau. The following Battle of Mons was the first engagement fought by British soldiers in Western Europe since the Battle of Waterloo, ninety-nine years earlier. In the first year of the war in France nine cavalry brigades were formed for three British cavalry divisions. Other regiments served in six brigades of the two British Indian Army cavalry divisions that were formed for service on the Western Front. Three regiments also fought in the campaign in Mesopotamia, the only other theatre of the First World War where British cavalry served.
The British yeomanry during the First World War were part of the British Army reserve Territorial Force. Initially, in 1914, there were fifty-seven regiments and fourteen mounted brigades. Soon after the declaration of war, second and third line regiments were formed. However, the third line regiments were soon absorbed into the Cavalry Reserve Regiments, to supply replacements for the cavalry and yeomanry. Other horsed regiments in the British Army, during the war, were the regular cavalry regiments and the three regiments belonging to the special reserve: the North Irish Horse, the South Irish Horse and the King Edward's Horse. The senior yeomanry regiments could trace their origins back over 100 years; the oldest regiment, the Royal Wiltshire Yeomanry, had been formed in 1794. The most junior regiment, the Welsh Horse, had only been formed on 18 August 1914, after the start of the war.
The Hampshire Royal Horse Artillery was a Territorial Force Royal Horse Artillery battery that was formed in Hampshire in 1909. It saw active service during the First World War in Egypt and Palestine from 1916 to 1918, initially as field artillery with 52nd (Lowland) Division before being converted back to horse artillery and serving with the Yeomanry Mounted Division and 1st Mounted / 4th Cavalry Division. A second line battery, 2/1st Hampshire RHA, served on the Western Front in 1917 and 1918 as part of an Army Field Artillery Brigade. Post-war, it was reconstituted as a Royal Field Artillery battery.
The Essex Royal Horse Artillery was a Territorial Force Royal Horse Artillery battery that was formed in Essex in 1908. It saw active service during the First World War in Egypt and Palestine from 1916 to 1918, initially as field artillery with 52nd (Lowland) Division before being converted back to horse artillery and serving with the 2nd Mounted / 5th Cavalry Division. A second line battery, 2/1st Essex RHA, served on the Western Front in 1917 and 1918 as part of an Army Field Artillery Brigade.
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.
The Somerset Royal Horse Artillery was a Territorial Force Royal Horse Artillery battery that was formed in Somerset in 1908. It saw active service during the First World War in the Sinai and Palestine Campaign with the ANZAC Mounted Division from 1916 to 1918. A second line battery, 2/1st Somerset RHA, served on the Western Front with the 63rd Division from 1916 to 1918. It was disembodied after the end of the war and was not reconstituted in the Territorial Force in 1920.
The Leicestershire Royal Horse Artillery was a Territorial Force Royal Horse Artillery battery that was formed in Leicestershire in 1908. It saw active service during the First World War in Egypt and Palestine from 1916 to 1918, initially with ANZAC Mounted Division before joining the Yeomanry Mounted Division and 1st Mounted / 4th Cavalry Division. A second line battery, 2/1st Leicestershire RHA, served on the Western Front with the 63rd Division from 1916 to 1918. Post-war, it was reconstituted as a Royal Field Artillery battery.
The Warwickshire Royal Horse Artillery was a Territorial Force Royal Horse Artillery battery that was formed in Warwickshire in 1908. It was the first Territorial Force artillery unit to go overseas on active service, spending the whole of the First World War on the Western Front, mostly with 1st Cavalry Division and 29th Division. A second line battery, 2/1st Warwickshire RHA, also served on the Western Front in 1917 and 1918 as part of an Army Field Artillery Brigade. Post-war it was reconstituted as a Royal Field Artillery battery.
The Nottinghamshire Royal Horse Artillery was a Territorial Force Royal Horse Artillery battery that was formed in Nottinghamshire in 1908. It saw active service during the First World War in the Middle East – in the Senussi Campaign and the Sinai and Palestine Campaign – from 1915 to 1918. A second line battery, 2/1st Nottinghamshire RHA, served in the Mesopotamian Campaign in 1917 and 1918 as a Field Artillery battery. Post-war, it was reconstituted as a Royal Field Artillery battery.
The 2nd Home Counties Division was a 2nd Line Territorial Force division of the British Army in World War I. The division was formed as a duplicate of the 44th Division in November 1914. As the name suggests, the division recruited in the Home Counties, particularly Kent, Middlesex, Surrey and Sussex. In August 1915, in common with all Territorial Force divisions, it was numbered as 67th Division. Between September 1917 and the end of the year, the division was extensively reorganized and lost its territorial identity; henceforth it was known as 67th Division.
United Kingdom 
British Army 