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| 25th Division (United Kingdom) | |
|---|---|
| Unit name | 25th Division |
| Country | United Kingdom |
| Branch | British Army |
| Type | Infantry |
| Size | Division |
| Notable commanders | Henry Horne, William Peyton, Alexander Godley |
| Battles | Second Battle of Ypres, Battle of Loos, Battle of the Somme, German spring offensive, Hundred Days Offensive, Battle of El Alamein, Normandy Campaign |
25th Division (United Kingdom)
The 25th Division was an infantry formation of the British Army raised during the First World War and later reconstituted in the Second World War, serving on the Western Front and in Egypt and Normandy. The division saw action in major engagements including the Second Battle of Ypres, the Battle of the Somme, and the Counter-Offensives of 1918, and its lineage influenced interwar Territorial reorganizations and postwar commemorations.
The division was formed in 1914 as part of Lord Kitchener's New Army expansion, raised under War Office authority alongside contemporaries such as the 10th (Irish) Division, 20th (Light) Division, and 30th Division. Early cadre and recruiting drew from counties and regiments including the Royal Fusiliers, Manchester Regiment, Northumberland Fusiliers, and Green Howards. Initial training took place in camps associated with the British Expeditionary Force mobilization, with brigades allocated to administrative depots at Aldershot, Catterick Garrison, and Ripon. Command appointments linked divisional leadership to figures with prior service in the Second Boer War and colonial campaigns.
Deployed to the Western Front in 1915, the division entered the Ypres salient during the Second Battle of Ypres and later participated in the Battle of Loos with brigades operating alongside units from the French Army, Canadian Expeditionary Force, and New Zealand Expeditionary Force. During the 1916 Battle of the Somme the division fought at Albert and Delville Wood sectors, coordinating with corps headquarters such as XIII Corps and XVIII Corps, and employing artillery support from Royal Royal Field Artillery brigades and trench mortar batteries. In 1917 its brigades saw action during the Third Battle of Ypres and later in counter-operations during the German withdrawal to the Hindenburg Line, intersecting with operations by the Australian Corps and Canadian Corps. The 1918 German Kaiserschlacht spring offensive pressed the division into defensive battles, after which it took part in the Allied Hundred Days Offensive that culminated in the Armistice, coordinating with the British Empire forces and the American Expeditionary Forces in combined operations.
Following demobilization after 1919 the division was disbanded amid widespread reductions affecting formations such as the 4th Division and 21st Division. Territorial reforms in the 1920s and 1930s, influenced by the Territorial Army reorganization and the Ten Year Rule, reshaped the regional regimental system that had provided battalions to the 25th's wartime order of battle. Senior officers who had commanded brigades went on to staff roles at the War Office, the Imperial Defence College, and within colonial commands like Egypt and India, contributing to doctrinal revisions that prefaced mechanization and anti-aircraft reforms preceding 1939.
A wartime reformation occurred as part of mobilisation in 1939–1940, with elements assigned to the British Expeditionary Force in France and later diverted to the Middle East theatre alongside formations such as the 8th Army and the Eighth Army. Divisional elements participated in the North African Campaign, including operations connected to the Second Battle of El Alamein, before some constituent units were amalgamated or transferred to armored and motorized formations like the 7th Armoured Division. In 1944 elements linked by lineage served in the North-West Europe Campaign and the Normandy Campaign after D-Day, cooperating with First Canadian Army and United States Army formations during breakthrough and pursuit operations into the Low Countries and Germany.
The division's First World War composition typically included three infantry brigades, divisional artillery (Royal Field Artillery and Royal Garrison Artillery batteries), engineer companies from the Royal Engineers, signals from the Royal Corps of Signals, and support units including divisional pioneers, ammunition columns, medical services of the Royal Army Medical Corps, and supply sections of the Royal Army Service Corps. Infantry battalions were drawn from regiments such as the Royal Fusiliers, Manchester Regiment, Durham Light Infantry, and North Staffordshire Regiment, with machine gun companies and trench mortar batteries added as the war evolved. Reformations in the Second World War reflected combined arms integration, with anti-tank units from the Royal Artillery and reconnaissance elements influenced by doctrine from British Expeditionary Force experiences.
Command of the division in 1915–1918 passed through senior officers experienced in prewar and colonial campaigns, with corps and army liaison to figures associated with Douglas Haig, Herbert Plumer, and Julian Byng at various stages. Senior brigade commanders later occupied posts at the General Staff and within theatre commands such as BEF and Middle East Command. During the Second World War, commanders and staff officers served in inter-Allied planning with counterparts from the United States Army, Free French Forces, and Polish Armed Forces in the West.
Remembrance of the division's sacrifices is preserved in regimental museums such as the Imperial War Museum, county museums in Yorkshire and Lancashire, and memorials on battlefields at Thiepval, Tyne Cot Cemetery, and sites in Flanders. Unit diaries and pension records held by institutions like the National Archives (United Kingdom) inform scholarly works and commemoration by associations of veterans and descendant organizations. The division's operational history influenced postwar infantry doctrine, commemoration practice, and the custodianship of honours and battle distinctions within successor regiments.