The Welsh Horse Yeomanry was a yeomanry regiment of the British Army that served in the First World War. The regiment was raised shortly after the outbreak of the war. Initially it served in East Anglia on anti-invasion duties, before being dismounted in 1915 and sent to take part in the Gallipoli Campaign. After withdrawal to Egypt, it was amalgamated with the 1/1st Montgomeryshire Yeomanry as the 25th Battalion, Royal Welch Fusiliers and served as such throughout the rest of the war. It took part in the Sinai and Palestine Campaign in 1917 and 1918, before being transferred to the Western Front where it remained until the end of the war. The regiment formed 2nd and 3rd Lines in 1914, but these never left the United Kingdom before being disbanded in 1916 and early 1917, respectively. The 1st Line was disbanded in 1919.
The 156th Brigade was an infantry brigade formation of the British Army. The brigade saw active service in both the First and the Second World Wars with the 52nd (Lowland) Infantry Division.
The 2nd Middlesex Brigade was a 2nd Line Territorial Force Brigade of the British Army in World War I. The brigade was formed as a duplicate of the Middlesex Brigade in October 1914 as part of the 2nd Home Counties Division. As the name suggests, the brigade recruited in Middlesex. In August 1915, in common with all Territorial Force brigades, it was numbered as 201st Brigade. Between September 1917 and the end of the year, the brigade was extensively reorganized and lost its territorial identity; henceforth it was known as 201st Brigade.
The 2nd Kent Brigade was a 2nd Line Territorial Force Brigade of the British Army in World War I. The brigade was formed as a duplicate of the Kent Brigade in October 1914 as part of the 2nd Home Counties Division. As the name suggests, the brigade recruited in Kent. In August 1915, in common with all Territorial Force brigades, it was numbered as 202nd Brigade. Between September 1917 and the end of the year, the brigade was extensively reorganized and lost its territorial identity; henceforth it was known as 202nd Brigade.
The 214th Brigade was an infantry formation of the British Army during World War I. It was raised as a second line brigade of the Territorial Force and initially assigned to the 71st Division for coast defence. Later it was reorganised as an all-arms brigade group for service in North Russia, but this was cancelled and it was reassigned to the 67th Division, a training and home defence formation, until the end of the war.
The 206th Brigade was a formation of the British Army during World War I. It was raised as a 2nd-Line duplicate of the Essex Brigade of the Territorial Force and formed part of the 69th Division. It served as a training formation in the United Kingdom without going overseas.
The 207th Brigade was a formation of the British Army during World War I. It was raised as a 2nd-Line duplicate of the 162nd Brigade of the Territorial Force and formed part of the 69th Division. It served as a training formation in the United Kingdom without going overseas.
The 213th Brigade was a Home Defence and training formation of the British Army during both the First and Second World Wars.
The 222nd Infantry Brigade was a Home Service formation of the British Army that existed under various short-lived titles in both the First and Second World Wars
The 226th Infantry Brigade was a Home Service formation of the British Army that existed under various short-lived titles in both World War I and World War II.
221st Mixed Brigade was a Scottish Home Service formation of the British Army that served under various titles throughout World War I.
The 223rd Brigade was a Home Defence formation of the British Army in the First and the Second World Wars. It existed under several variations of the 223 Brigade title, and was eventually converted into an airborne formation.
The 224th Brigade was a Home Defence formation of the British Army in World War I and World War II. It existed under several variations of the 224th Brigade title.
The 225th Brigade was a Home Defence formation of the British Army in the First and the Second World Wars. It existed under several variations of the 225th Brigade title.
71st Division was a short-lived infantry division of the British Army during the First World War. It served in the Home Defence forces and never went overseas.
72nd Division was a short-lived infantry division of the British Army during World War I. It served in the Home Defence forces and never went overseas.
73rd Division was a short-lived infantry division of the British Army during World War I. It served in Home Forces and never went overseas.
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.
The Kent Cyclist Battalion was a bicycle infantry battalion of the Territorial Force, part of the British Army. Formed in 1908, it was sent to India in the First World War and saw active service during the Third Anglo-Afghan War in 1919. In 1920, it was converted as part of the Royal Artillery.
United Kingdom 
British Army 