The 2nd Mounted Division was a yeomanry division that served in the First World War. At the outbreak of war it was assigned to defence of the Norfolk coast. In March 1915 it formed a 2nd Line duplicate of itself, the 2/2nd Mounted Division. Leaving the 2/2nd on coastal defence, it then fought at Gallipoli from April to December 1915, under the command of Major General William Peyton, before being disbanded in January 1916.
152nd Infantry Brigade was a formation of Britain's Territorial Force/Territorial Army that was part of 51st (Highland) Division in both World Wars. From its origins in the 19th Century Volunteer Force it was based in Inverness and was composed of Highland battalions. It served on the Western Front in World War I, and after it was captured at Saint-Valery-en-Caux early in World War II it was reformed from its 2nd Line and saw action in North Africa, Sicily and North West Europe.
153rd Infantry Brigade was a formation of Britain's Territorial Force/Territorial Army that was part of 51st (Highland) Division in both World Wars. From its origins in the 19th Century Volunteer Force it was based in Aberdeen and was composed of Highland battalions. It served on the Western Front in World War I, and after it was captured at Saint-Valery-en-Caux early in World War II it was reformed from its 2nd Line and saw action in North Africa, Sicily and North West Europe. It continued serving postwar until the reduction of the Territorial Army in the 1960s.
154th Infantry Brigade was a formation of Britain's Territorial Force/Territorial Army that was part of 51st (Highland) Division in both World Wars. From its origins in the 19th Century Volunteer Force it was based in Stirling and was composed of Highland battalions. It served on the Western Front in World War I, and after it escaped from France early in World War II it was reformed from its 2nd Line and saw action in North Africa, Sicily and North West Europe. It continued serving postwar until the reduction of the Territorial Army in the 1960s.
227th Brigade was an infantry formation of the British Army formed for Home Service under various short-lived titles in the First and the Second World Wars. Later it was upgraded to a field formation composed of Scottish troops, and saw heavy fighting in the Normandy and North West Europe Campaign.
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 155th Brigade was an infantry brigade of the British Army that saw active service in both the First and the Second World Wars. Assigned to the 52nd (Lowland) Division, the brigade saw active service in the Middle East and on the Western Front during the First World War. During the Second World War, now the 155th Infantry Brigade, it continued to serve with the 52nd Division in Operation Dynamo, and later in North-western Europe from late 1944 until May 1945.
The 157th Brigade was an infantry brigade of the British Army. The brigade fought in both the First and the Second World Wars, assigned to 52nd (Lowland) Infantry Division.
The 45th Infantry Division was an infantry division of the Territorial Force, part of the British Army. It was formed in the First World War as a duplicate of the 43rd (Wessex) Division and was originally formed as the 2nd Wessex Division in 1914–1915 before later being renamed as the 45th Division and the brigades numbered. It was sent overseas to India in December 1914 to relieve Regular Army units for service in France. The division remained there for the rest of the war, supplying drafts of replacements to the British units fighting in the Middle East and later complete battalions.
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 134th Infantry Brigade was an infantry brigade of the Territorial Force, part of the British Army. It was formed in the First World War as a duplicate of the Hampshire Brigade and was originally formed as the 2nd/1st Hampshire Brigade in 1914–1915 before later being renamed as the 134th Brigade. It was sent overseas to India in December 1914 to relieve Regular Army units for service in France. The brigade remained there for the rest of the war, supplying drafts of replacements to the British units fighting in the Middle East and later complete battalions. By September 1917 the last of its battalions had departed.
The 64th Division was an infantry division of the British Army, raised during the Great War. The division was formed in late 1914 as a second-line Territorial Force formation which served on home defence duties throughout the war.
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.
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.
The Black Watch Brigade was a Territorial Force infantry brigade of the British Army. Formed in 1908, it was not part of any division, instead being assigned to Coastal Defence duties in Scottish Command. It was dissolved in early 1915 as its constituent battalions were posted to other formations.
The South Wales Brigade was a Territorial Force infantry brigade of the British Army. Formed in 1908, it was not part of any division, instead serving as Army Troops, though attached to the Welsh Division in peacetime. It was dissolved in early 1915 as its constituent battalions were posted to other formations.
The Highland Cyclist Battalion was a bicycle infantry battalion of the Territorial Force, part of the British Army. Formed as part of the Volunteer Force in 1860, it became a Volunteer Battalion of the Black Watch in 1881. In 1909 it became an independent unit and served in the United Kingdom throughout the First World War. In 1920 it was converted as part of the Highland Divisional Signals.
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 