The 21st Division was an infantry division of the British Army during World War I, raised in September 1914 by men volunteering for Lord Kitchener's New Armies. The division moved to France in September 1915 and served on the Western Front for the duration of the First World War. The divisional insignia was the "triple-seven".
The Northumbrian Division was an infantry division of the British Army, formed in 1908 as part of the Territorial Force with units drawn from the north-east of England, notably Northumberland, Durham and the North and East Ridings of Yorkshire. The division was numbered as 50th (Northumbrian) Division in 1915 and served on the Western Front throughout the First World War. Due to losses suffered in the Ludendorf Offensive in March 1918 it had to be comprehensively reorganized. It was once again reformed in the Territorial Army as the Northumbrian Division in 1920.
The 28th Division was an infantry division of the British Army raised for service in World War I.
The Northumberland Hussars was a Yeomanry regiment of the British Army, transferred to the Royal Artillery for the duration of the Second World War. It was disbanded as an independent Territorial Army unit in 1967, a time when the strength of the Territorial Army was greatly reduced. The regiment's name lives on in the title of the command and support squadron of the Queen's Own Yeomanry (QOY), a Formation Reconnaissance Regiment based in Newcastle upon Tyne.
The Northumberland Brigade was formed in 1908 as part of the Territorial Force of the British Army with four battalions of the Northumberland Fusiliers. The brigade was numbered as 149th (Northumberland) Brigade in 1915 and served with the 50th (Northumbrian) Division on the Western Front throughout World War I. Due to losses suffered in the Ludendorf Offensive in 1918, it had to be comprehensively reorganized. Reformed as the Northumberland Brigade post-war, it was broken up before the outbreak of World War II.
The Durham Light Infantry Brigade was formed in 1902 to command the part-time Volunteer battalions of the Durham Light Infantry (DLI). Previously these had been in a combined Tyne and Tees Brigade with battalions of the Northumberland Fusiliers. It consisted of the 1st–4th Volunteer Battalions of the DLI, which were renumbered as the 5th–8th Battalions when the Volunteers were subsumed into the Territorial Force (TF) under the Haldane Reforms of 1908. Consisting of 6th–9th Battalions, it became part of the TF's Northumbrian Division. During World War I it was numbered as the 151st Brigade on 14 May 1915, when the division became the 50th (Northumbrian) Division. The TF also raised 2nd Line units and formations, and the 190th Brigade was formed in 63rd Division. The 1st Line battalions adopted the prefix '1/'
The 188th Brigade was formed in 1915 as a 2nd Line infantry brigade of the British Army's Territorial Force. It commanded four battalions of the Northumberland Fusiliers in the Home Defence role. It was broken up in November 1916 as its battalions were posted away.
The 189th Brigade was a formation of the British Army during the First World War. It was raised as a second line brigade, part of the 63rd Division, from those men in the Territorial Force who had not agreed to serve overseas. The second line infantry battalions had a minimum strength of 600 men. The brigade was disbanded in November 1916.
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.
217th Brigade was a Home Service formation of the British Army during the First and the Second World Wars.
The Yorkshire Mounted Brigade was a formation of Britain's part-time Territorial Force organised in 1908. Mobilised on the outbreak of World War I, its regiments had been posted away by 1915 so it was broken up. It never saw active service.
The 17th Mounted Brigade previously known as the 2/1st Welsh Border Mounted Brigade was a 2nd Line yeomanry brigade of the British Army during the First World War. In July 1916 it was converted to a cyclist formation as 10th Cyclist Brigade and in November 1916 was redesignated as 6th Cyclist Brigade. It was still in existence, in Ireland, at the end of the war.
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
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.
The 190th Brigade was a 2nd Line Territorial Force formation of the British Army during World War I. Formed from battalions of the Durham Light Infantry, it served in home defence without ever going overseas as a complete formation.
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 Shropshire Royal Horse Artillery was a Territorial Force Royal Horse Artillery battery that was formed in Shropshire in 1908 from the Shropshire Battery of the 1st Shropshire and Staffordshire Artillery Volunteers, Royal Garrison Artillery of the Volunteer Force. It saw active service during the First World War on the Western Front in 1917 and 1918 as part of an Army Field Artillery Brigade. A second line battery, 2/1st Shropshire RHA, also served on the Western Front in 1917 and 1918 as part of another Army Field Artillery Brigade. It was reconstituted post-war as a medium artillery battery and served as such in the Second World War.
The Northern Cyclist Battalion was a bicycle infantry battalion of the Territorial Force, part of the British Army. Formed in 1908, it served in the United Kingdom throughout the First World War and in 1920 it was converted as part of the Royal Garrison Artillery.
The 1st North Riding Artillery Volunteers was a part-time unit formed in the North Riding of Yorkshire in 1860 in response to an invasion scare. The unit later became part of the Territorial Force and served on the Western Front during World War I, while their successors served as anti-aircraft gunners in World War II.
United Kingdom 
British Army 