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| Army (United Kingdom) | |
|---|---|
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| Unit name | Army (United Kingdom) |
| Dates | 1660–present |
| Country | United Kingdom |
| Allegiance | Crown |
| Branch | Armed Forces |
| Type | Land warfare |
| Role | Defence of the Realm |
| Size | Approx. 72,000 regulars, 27,000 reserves (2020s) |
| Command structure | Ministry of Defence |
| Garrison | Whitehall, London |
| Garrison label | Headquarters |
| Nickname | British Army |
| Battles | Napoleonic Wars, Crimean War, Indian Rebellion of 1857, Second Boer War, World War I, World War II, Korean War, Falklands War, Gulf War, Iraq War, War in Afghanistan (2001–2021) |
| Decorations | Victoria Cross, George Cross |
| Commander1 | King Charles III |
| Commander1 label | Head of State |
| Commander2 | Chief of the Defence Staff |
| Commander2 label | Professional head |
Army (United Kingdom)
The Army is the principal land force of the United Kingdom and a component of the British Armed Forces. It traces institutional roots through the New Model Army, the English Civil War, the Restoration and successive regimental systems, participating in campaigns from the Napoleonic Wars to operations in Iraq and Afghanistan. The Army operates under the Ministry of Defence and is led by senior officers who report to the Prime Minister and the Crown.
The Army evolved from royal and parliamentary forces including the New Model Army and the standing establishment formalised after the Restoration, later professionalised during the Cardwell Reforms and Childers Reforms. In the 19th century the Army fought in the Crimean War, the Indian Rebellion of 1857, and the Second Boer War, influencing imperial policy alongside the Foreign Office and East India Company. Industrial-era innovations shaped doctrine during the Napoleonic Wars and the emergence of the Royal Artillery and Royal Engineers. In the 20th century the Army mobilised for World War I and World War II, cooperating with the Royal Navy and Royal Air Force in coalition campaigns such as the Dunkirk evacuation, North African campaign, and the Normandy landings. Postwar commitments included the Korean War, counter-insurgency in Malaya, and Cold War deployment to Germany as part of British Army of the Rhine. Late 20th- and early 21st-century operations include the Falklands War, the Gulf War, the Iraq War, and the War in Afghanistan (2001–2021), alongside NATO missions and United Nations deployments.
The Army's structure comprises corps and regiments such as the Household Division, Royal Armoured Corps, Infantry, Royal Artillery, Royal Engineers, Royal Logistic Corps, Army Air Corps, and Royal Corps of Signals. Command is exercised by the Chief of the General Staff, who sits alongside the Chief of the Defence Staff within the MOD. Regional commands include Field Army and specialist commands for recruitment, training and logistics. Units serve under formations such as brigades and divisions, and the Army integrates with NATO structures including Supreme Headquarters Allied Powers Europe and Allied Rapid Reaction Corps for collective defence.
Primary roles encompass expeditionary warfare, homeland defence, deterrence, crisis response, and support to civil authorities including disaster relief. The Army conducts operations ranging from high-intensity combat exemplified by armoured manoeuvre in Operation Granby to counter-insurgency during Operation Herrick in Afghanistan. Peacekeeping and stability missions have occurred under United Nations mandates in regions like Bosnia and Herzegovina and Kosovo. The Army contributes to multinational coalitions including NATO deployments to the Baltic States and eastern Europe following the Russo-Ukrainian War and provides training partnerships with militaries such as those of Nigeria, Kenya, and Iraq.
Equipment encompasses armoured platforms including the Challenger 2 main battle tank and the Ajax tracked reconnaissance family, close support vehicles like the Warrior tracked vehicle, and artillery systems such as the AS-90. Air mobility and rotary-wing assets are provided by the Army Air Corps using types like the Apache helicopter. Logistics and transport rely on vehicles including the HMS Ocean-complemented landing platforms, tactical trucks, and armoured personnel carriers such as the Foxhound (vehicle). Surveillance, communications and electronic warfare draw on systems interoperable with NATO standards, and the Army fields precision munitions, unmanned aerial systems similar to those used in Operation Shader, and cyber capabilities aligned with the National Cyber Force and Government Communications Headquarters.
Recruitment sources include regulars and reserves such as the Army Reserve and specialised units like the Special Air Service and Special Reconnaissance Regiment. Training is delivered at institutions including the Royal Military Academy Sandhurst, the Royal Military College of Science, Defence Academy, and regional training centres like the Infantry Training Centre and Ministry of Defence ranges at Salisbury Plain and Castlemartin. Career progression follows professional military education, staff college attendance at the Joint Services Command and Staff College, and operational deployments. Medals and awards such as the Victoria Cross and Distinguished Service Order recognise valour and leadership.
Uniforms range from ceremonial full dress worn by the Household Division at Trooping the Colour to combat dress utilising camouflage patterns for temperate and arid theatres. Regimental distinctions are expressed via cap badges, stable belts and hackles borne by units like the Grenadier Guards, Coldstream Guards, Scots Guards, Royal Gurkha Rifles, and Rifle Regiment. Rank insignia derive from traditions of the Cardwell Reforms and are worn in forms such as pips and crowns for officers, chevrons for non-commissioned officers, and brevet appointments reflecting service in formations like the Guards Division.
Traditions encompass regimental histories, battle honours displayed on colours and guidons, and ceremonies including Remembrance Sunday, Beating Retreat, and Presentation of Colours. Battle honours commemorate engagements such as Waterloo, Somme (Battle of the Somme), El Alamein, and Gulf War (1990–1991). Orders and decorations include the Victoria Cross, George Cross, and campaign medals linked to campaigns like Iraq War and Afghanistan. Alliances and freedom of the city privileges connect regiments to municipalities such as London and Edinburgh, while museums including the National Army Museum preserve artefacts and archives.