Structure of the British Army The structure of the British Army is broadly similar to that of the Royal Navy and Royal Air Force , with a single command based at Andover known as " Army Headquarters " . As top - level budget holder , this organisation is responsible for providing forces at operational readiness for employment by the Permanent Joint Headquarters . The command structure is hierarchical with divisions and brigade s controlling groupings of units from an administrative perspective . Major Units are regiment or battalion - sized with minor units being either company sized sub - units or platoons . All units within the service are either Regular ( full - time ) or Territorial Army ( part - time ) , or a combination with sub - units of each type . Naming conventions of units differ for traditional British historical reasons , creating a significant opportunity for confusion ; an infantry battalion is equivalent to a cavalry regiment . An infantry regiment is an administrative and ceremonial organisation only and may include several battalions . For operational tasks a battle group will be formed around a combat unit , supported by units or sub - units from other areas . Such an example would be a squadron of tanks attached to an armoured infantry battle group , together with a reconnaissance troop , artillery battery and engineering support . Formations . Commands . A command is a military formation that handles a specific task or region , and can direct forces as large as multiple corps or as little as a few battalions . Under a major army command reorganisation effective 1 November 2011 the Chief of the General Staff took direct command of the Army through a new structure , based at Andover and known as " Army Headquarters " . Reporting to the Chief of the General Staff are : the Commander Land Forces , the Adjutant - General and the Commander Force Development and Training . The Commander Land Forces is responsible for generating and preparing forces for current and contingency operations , the Adjutant - General is responsible for developing the Army ' s personnel policies and supporting its people and the Commander Force Development and Training is responsible for recruiting and training the Army , and developing its capability , sustainability and doctrine . The Commander Land Forces commands 1st ( Armoured ) Division , 3rd ( Mechanized ) Division and Theatre Troops . He also commands the administrative organisation of garrisons in mainland UK through HQ Support Command based in Aldershot and British Forces Germany . The Chief of the General Staff is the Standing Joint Commander ( UK ) ( SJC ( UK ) ) , responsible for overall command of Military Aid to Civil Power within mainland United Kingdom . Previously the Army had regional commands in the UK , including Aldershot Command , Eastern Command , Northern Command , Scottish Command , Southern Command and Western Command . Corps . A corps is a formation of two or more divisions , potentially fifty thousand personnel or more . Whilst the British Army has the capability there is no standing UK Corps organisation , forces being allocated through a number of multi - partite arrangements to the North Atlantic Treaty Organisation ( NATO ) and European commitments , providing much of the headquarters capability and framework for the multinational Allied Rapid Reaction Corps . The word corps is more formally used for administrative groupings by common function , such as the Royal Armoured Corps and Army Air Corps , with various Combat Support Arms and Services being referred to in the wider sense as a Corps , such as the Royal Corps of Signals . Divisions . A division is a formation of three or four brigades , around twenty thousand personnel , commanded by a Major General . The British Army has two deployable divisions , capable of deploying the headquarters and subordinate formations immediately to operations . London District is responsible for the maintenance of capability for the defence of the capital and the provision of ceremonial units and garrisons for the Crown Estate in London , such as the Tower of London . Several infantry regiments are organised into five administrative divisions based on the type of infantry unit or traditional recruiting areas : Brigades . A brigade contains three or four battalion - sized units , around 5 , 000 personnel and is commanded by a one star officer , a Brigadier . The brigade will contain a wide range of military disciplines allowing the conduct of a spectrum of military tasks . The brigade would be required to deploy up to three separate battlegroups , the primary tactical formation employed in British doctrine . The battlegroup is a mixed formation around the core of one unit , an armoured regiment or infantry battalion , with sub - units providing artillery , engineers , logistics , aviation , etc . , as required . Order of precedence . The British Army parades according to the order of precedence , from right to left , with the unit at the extreme right being highest on the order . The Household Cavalry has the highest precedence , unless the Royal Horse Artillery parades with its guns . Arms and services . Combat Arms . The Combat Arms are the " teeth " of the British Army , infantry , armoured and aviation units which engage in close action . Household Cavalry and Royal Armoured Corps . Regiments of line cavalry and the Royal Tank Regiment together form the Royal Armoured Corps which has units equipped with either main battle tanks or with light armour for formation reconnaissance . An additional reconnaissance regiment is provided by the Household Cavalry Regiment , of the Household Cavalry , which administratively is not considered to be part of the RAC , but is included among the RAC order of battle for operational tasking . The 1st Royal Tank Regiment operates dual roles , with two squadrons allocated to each : Infantry . The Infantry is divided for administrative purposes into five divisions with battalions being trained and equipped to operate in one of five main roles : Under the arms - plot system , a battalion would spend between two and six years in one role , before re - training for another . Following a review of the operation of the army it has been demonstrated that the system is inefficient and the system is being phased out , with battalions specialising in role — this will see armoured infantry , mechanised infantry and air assault battalions remaining in a single posting ; however , light infantry battalions will continue to be periodically rotated between postings . Personnel will be " trickle posted " between battalions of the same regiment as required , and to further their careers . Four further infantry units in the regular army are not grouped within the various infantry divisions : The role of the Royal Gibraltar Regiment is limited to the defence of Gibraltar . The three senior regiments of foot guards , plus the Royal Regiment of Scotland , each maintain an additional reinforced company that retains custody of the colours of battalions that are in suspended animation : Brigade of Gurkhas . The Royal Gurkha Rifles is the largest element of the Brigade of Gurkhas which includes its own support arms . These units are affiliated to the equivalent British units , but have their own unique cap badges . Special Forces . Note : UKSF is considered a joint organisation and as such falls outside the Army chain of command . Army Air Corps . The Army Air Corps provides battlefield air support with 6 Regiments and 4 independent squadrons and flights : Combat Support Arms . The Combat Support Arms provide direct support to the Combat Arms and include artillery , engineer , signals and aviation . Royal Regiment of Artillery . The Royal Artillery consists of 16 regiments , four of which retain the cap badge and traditions of the Royal Horse Artillery . The Royal Artillery undertakes seven different roles : Corps of Royal Engineers . The Royal Engineers is a corps of 15 regiments in the regular army providing military engineering ( civil engineering , assault engineering and demolition ) capabilities to the field army and facilities management expertise within garrisons . Regiments are associated with Brigade level formations with a number of independent squadrons and support groups associated with specific tasks : The Royal School of Military Engineering ( RSME ) comprises two recruit training regiments : The remainder are field regiments attached to various deployable formations : Two squadrons of 36 Engineer Regiment are cap badged as Queen ' s Gurkha Engineers and are manned predominantly by Gurkhas . Royal Corps of Signals . The Royal Signals is a corps of 10 Regiments and 13 independent squadrons which provides communications and information systems support to formations of Brigade level and above . Below the Brigade level support is provided by " Battalion Signallers " drawn from the parent unit . Within the deployable brigades the Signal Regiment also provides support to the HQ function including logistics , life support and force protection capabilities . Two squadrons are cap badged as the Queen ' s Gurkha Signals and are manned predominantly by Gurkhas . Intelligence Corps . The Intelligence Corps provides intelligence support including collection , interpretation and counter - intelligence capabilities with three battalions and a joint service group : Combat Service Support Arms . The Combat Service Support Arms provide sustainment and support for the Combat and Combat Support Arms . Whilst CSS personnel are not intended to close with and engage opposition forces the fluidity of the modern battlefield means that these personnel are likely to be engaged in close combat at times , particularly when associated with Battle Groups . Royal Logistic Corps . The Royal Logistic Corps is the largest single corps in the British Army ; responsible for a range of supply , sustainment and movement tasks . Within the corps there are 21 regiments and 6 independent sub - units : Corps of Royal Electrical and Mechanical Engineers . The Royal Electrical and Mechanical Engineers is a corps which provides maintenance support to equipment . Most units will have either a Light Aid Detachment ( LAD ) or Workshop ( Wksp ) attached . Seven battalions provide support to formations of brigade level and above : Medical services . The Army Medical Services provide primary and secondary care for the armed forces in fixed locations and whilst deployed on operations . Personnel are attached to a parent unit , one of five field regiments or the defence medical services . The AMS comprises four different Corps providing the range of medical and veterinary care , with the Royal Army Medical Corps also providing the administrative framework for the regiments . Adjutant General ' s Corps . The Adjutant General ' s Corps provides administrative , police and disciplinary and educational support to the army . The AGC is an amalgamation with three of the constituent units retaining their previous cap badge . Personnel from the AGC administrative and educational specialisations serve in attached posts to establishments or units of other arms . The police and disciplinary activities retain their own cap badges and act as discrete bodies . The Corps as a whole is divided into four separate branches : Training . Training in the British Army differs for soldiers and officers but in general takes place in at least two phases : Phase one training is basic military training for all new recruits . Here candidates learn the basic standards of military performance including operation in the field , weapon handling , personal administration , drill etc . Soldiers in other specialisations undergo the 14 week Army Development Course at one of two Army Training Regiment s ; Pirbright or Winchester , or the Army Foundation College , Harrogate . Phase two training is specific to the trade which the soldier or officer will follow and is conducted in a branch specialised school . Phase two training enables the individual to join an operational unit prepared to contribute to operational effectiveness . These schools are under the direction of the parent corps or arm of the service , as illustrated above , with the Infantry Training Centre being formed of two training battalions . Units of the Territorial Army . Combat Arms . Armour ( TA ) . The four armoured regiments of the Territorial Army operate in two roles - provision of crew replacements for armoured and NBC regiments , and formation reconnaissance : Combat Support . Royal Engineers ( TA ) . Note : Although the Royal Monmouthshire Royal Engineers is part of the Royal Engineers order of battle , it is a separate regiment with its own cap badge , regimental colours and traditions . Ceremonial units . The Household Cavalry Mounted Regiment ( HCMR ) and King ' s Troop , Royal Horse Artillery are units whose primary function is ceremonial . The HCMR is manned by fully trained soldiers who are periodically rotated through from operational units of the Household Cavalry . Queen ' s Guard / Queen ' s Life Guard . The Queen ' s Guard at Buckingham Palace and Windsor Castle is primarily mounted by the two Foot Guards Battalions and one Line Infantry Battalion in London District together with the Foot Guards Incremental companies : The guard at Horse Guards is normally drawn from the HCMR . Public duties in the City of London are carried out by the Honourable Artillery Company . Public duties in Edinburgh will be the responsibility of a new incremental company , formed through the reduction of a battalion of the Royal Regiment of Scotland : Gun salutes . The following units provide gun salutes in London : Restructuring . Delivering Security in a Changing World . In July 2004 and December 2004 a significant restructuring of the armed forces was announced with a wide ranging impact on all three services . For the army the infantry strength was to be reduced by four infantry battalions ( three English and one Scottish ) with the remaining single battalion regiments amalgamating within their division ; Scottish , King ' s and Prince of Wales ' s . The armoured strength was to be rebalanced reducing the strength by seven Challenger 2 squadrons by re - roling one regiment as force reconnaissance . The artillery strength was to be rebalanced , reducing AS - 90 battery numbers by six by re - roling a regiment to the light gun and reducing the size of individual Ground Based Air Defence batteries . The brigade structure was to be restructured to become : Infantry restructuring . The arms plot is to be abolished , with all infantry battalions given a set role and ( for armoured and mechanised battalions ) location . In order that officers and soldiers can keep up the various skills gained through each of the distinct roles , all single battalion regiments ( with the exception of the Guards regiments and the Royal Irish Regiment ) will be amalgamated into large regiments . It is planned that each division will have a total of five battalions ; of these , one will be armoured infantry , one will be mechanised infantry and the remainder light infantry . Army 2020 . In 2010 , the incoming government conducted a new defence review . Those elements affecting the army were released as part of the Future British Army Structure ( Next Steps publication : . This was subsequently superseded by the Army 2020 concept announced in 2012 . Under Army 2020 the army will be divided into : Along with three three main elements are a Territorial Army , now designated as the Army Reserve . All units from Germany will slowly move back to the UK . The basing plan was released on 5 March 2013 . This positions 3rd ( Mechanised ) Division , to be renamed as 3rd ( UK ) Division as the head of the Reaction Force . 1st ( Armoured ) Division , to be renamed as 1st ( UK ) Division , will be the division in charge of the Adaptable Force , being based in York . This basing plan locates all three Reaction Force Brigades , along with the three Armoured Regiments and the six Armoured Infantry Battalions in the Salisbury Plain training area . The full army structure under Army 2020 until September 2016 is to be : Force Troops . Force Troops HQ , Upavon Note : 2 YORKS in the above structure will be the original 1 YORKS ( renumbered ) . 1 YORKS was 3 YORKS ( also reunumbered ) .