The War Office has referred to several British government organisations throughout history, all relating to the army. It was a
department of the British Government responsible for the administration of the
British Army
The British Army is the principal Army, land warfare force of the United Kingdom. the British Army comprises 73,847 regular full-time personnel, 4,127 Brigade of Gurkhas, Gurkhas, 25,742 Army Reserve (United Kingdom), volunteer reserve perso ...
between 1857 and 1964, at which point its functions were transferred to the new
Ministry of Defence (MoD).
[ This article contains text from this source, which is available under th]
Open Government Licence v3.0
© Crown copyright It was equivalent to the
Admiralty at that time, which was responsible for the
Royal Navy
The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...
(RN), and (much later) the
Air Ministry
The Air Ministry was a department of the Government of the United Kingdom with the responsibility of managing the affairs of the Royal Air Force and civil aviation that existed from 1918 to 1964. It was under the political authority of the ...
, which oversaw the
Royal Air Force
The Royal Air Force (RAF) is the Air force, air and space force of the United Kingdom, British Overseas Territories and Crown Dependencies. It was formed towards the end of the World War I, First World War on 1 April 1918, on the merger of t ...
(RAF). The name 'Old War Office' is also given to the former home of the department, located at the junction of
Horse Guards Avenue and
Whitehall
Whitehall is a road and area in the City of Westminster, Central London, England. The road forms the first part of the A roads in Zone 3 of the Great Britain numbering scheme, A3212 road from Trafalgar Square to Chelsea, London, Chelsea. It ...
in central
London
London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...
. The landmark building was sold on 1 March 2016 by
HM Government
His Majesty's Government, abbreviated to HM Government or otherwise UK Government, is the central executive authority of the United Kingdom of Great Britain and Northern Ireland. for more than
£350 million, on a 250-year lease for conversion into a luxury hotel and residential apartments.
Prior to 1855, 'War Office' signified the office of the
Secretary at War. In the 17th and 18th centuries, a number of independent offices and individuals were responsible for various aspects of Army administration. The most important were the
Commander-in-Chief of the Forces
Commander-in-Chief of the Forces, later Commander-in-Chief, British Army, or just Commander-in-Chief (C-in-C), was (intermittently) the title of the professional head of the English Army from 1660 to 1707 (the English Army, founded in 1645, wa ...
, the
Secretary at War, and the twin
Secretaries of State; most of whose military responsibilities were passed to a new
Secretary of State for War in 1794. Others who performed specialist functions were the
controller of army accounts, the
Army Medical Board, the
Commissariat
A commissariat is a department or organization commanded by a commissary or by a corps of commissaries.
In many countries, commissary is a police rank. In those countries, a commissariat is a police station commanded by a commissary.
In some a ...
Department, the Board of General Officers, the
Judge Advocate General of the Armed Forces
In the United Kingdom, the Judge Advocate General is a judge responsible for the Court Martial process within the Royal Navy, British Army and Royal Air Force. As such the post has existed since 2006; prior to this date the Judge Advocate General ...
, the Commissary General of
Muster, the
Paymaster General of the forces, and (particularly with regard to the
Militia
A militia ( ) is a military or paramilitary force that comprises civilian members, as opposed to a professional standing army of regular, full-time military personnel. Militias may be raised in times of need to support regular troops or se ...
) the
Home Office
The Home Office (HO), also known (especially in official papers and when referred to in Parliament) as the Home Department, is the United Kingdom's interior ministry. It is responsible for public safety and policing, border security, immigr ...
.
[
The term War Department was initially used for the separate office of the Secretary of State for War; in 1855, the offices of Secretary at War and Secretary of State for War were merged, and thereafter the terms War Office and War Department were used somewhat interchangeably.]
History
The War Office developed from the Council of War
A council of warKingdom of England
The Kingdom of England was a sovereign state on the island of Great Britain from the late 9th century, when it was unified from various Heptarchy, Anglo-Saxon kingdoms, until 1 May 1707, when it united with Kingdom of Scotland, Scotland to f ...
's wars and campaigns. The management of the War Office was directed initially by the Secretary at War, whose role had originated during the reign of King Charles II as the secretary to the Commander-in-Chief of the Army. In the latter part of the 17th century, the office of Commander-in-Chief was vacant for several periods, which left the Secretary at War answering directly to the Sovereign; and thereafter, even when the office of Commander-in-Chief was restored on a more permanent basis, the Secretary at War retained his independence.[
The department of the Secretary at War was referred to as the 'Warr Office' (sic) from as early as 1694;][ its foundation has traditionally been ascribed to William Blathwayt, who had accompanied King William III during the ]Nine Years' War
The Nine Years' War was a European great power conflict from 1688 to 1697 between Kingdom of France, France and the Grand Alliance (League of Augsburg), Grand Alliance. Although largely concentrated in Europe, fighting spread to colonial poss ...
and who, from his appointment as Secretary in 1684, had greatly expanded the remit of his office to cover general day-to-day administration of the Army.
After Blathwayt's retirement in 1704, Secretary at War became a political office. In political terms, it was a fairly minor government job (despite retaining a continued right of access to the monarch) which dealt with the minutiae of administration, rather than grand strategy. The Secretary, who was usually a member of the House of Commons, routinely presented the House with the Army Estimates, and occasionally spoke on other military matters as required. In symbolic terms, he was seen as signifying parliamentary control over the Army. Issues of strategic policy during wartime were managed by the Northern and Southern Departments (the predecessors of today's Foreign Office
Foreign may refer to:
Government
* Foreign policy, how a country interacts with other countries
* Ministry of Foreign Affairs, in many countries
** Foreign Office, a department of the UK government
** Foreign office and foreign minister
* United ...
and Home Office
The Home Office (HO), also known (especially in official papers and when referred to in Parliament) as the Home Department, is the United Kingdom's interior ministry. It is responsible for public safety and policing, border security, immigr ...
).
From 1704 to 1855, the post of Secretary remained occupied by a minister of the second rank (although he was occasionally part of the Cabinet after 1794). Many of his responsibilities were transferred to the Secretary of State for War after the creation of that more senior post in 1794 (though the latter was also responsible for Britain's colonies from 1801, and renamed Secretary of State for War and the Colonies
The Secretary of State for War and the Colonies was a British cabinet-level position responsible for the army and the British colonies (other than India). The Secretary was supported by an Under-Secretary of State for War and the Colonies.
Hist ...
, an arrangement which only ceased with the establishment of the Colonial Office in 1854).
From 1824, the British Empire
The British Empire comprised the dominions, Crown colony, colonies, protectorates, League of Nations mandate, mandates, and other Dependent territory, territories ruled or administered by the United Kingdom and its predecessor states. It bega ...
(excepting India
India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
, which was administered separately by the East India Company
The East India Company (EIC) was an English, and later British, joint-stock company that was founded in 1600 and dissolved in 1874. It was formed to Indian Ocean trade, trade in the Indian Ocean region, initially with the East Indies (South A ...
and then the India Office
The India Office was a British government department in London established in 1858 to oversee the administration of the Provinces of India, through the British viceroy and other officials. The administered territories comprised most of the mo ...
) was divided by the War and Colonial Office into the following administrative departments:
NORTH AMERICA
* Upper Canada
The Province of Upper Canada () was a Province, part of The Canadas, British Canada established in 1791 by the Kingdom of Great Britain, to govern the central third of the lands in British North America, formerly part of the Province of Queb ...
, Lower Canada
The Province of Lower Canada () was a British colonization of the Americas, British colony on the lower Saint Lawrence River and the shores of the Gulf of Saint Lawrence established in 1791 and abolished in 1841. It covered the southern portion o ...
* New Brunswick
New Brunswick is a Provinces and Territories of Canada, province of Canada, bordering Quebec to the north, Nova Scotia to the east, the Gulf of Saint Lawrence to the northeast, the Bay of Fundy to the southeast, and the U.S. state of Maine to ...
, Nova Scotia
Nova Scotia is a Provinces and territories of Canada, province of Canada, located on its east coast. It is one of the three Maritime Canada, Maritime provinces and Population of Canada by province and territory, most populous province in Atlan ...
, Prince Edward Island
Prince Edward Island is an island Provinces and territories of Canada, province of Canada. While it is the smallest province by land area and population, it is the most densely populated. The island has several nicknames: "Garden of the Gulf", ...
* Bermuda
Bermuda is a British Overseas Territories, British Overseas Territory in the Atlantic Ocean, North Atlantic Ocean. The closest land outside the territory is in the American state of North Carolina, about to the west-northwest.
Bermuda is an ...
, Newfoundland
Newfoundland and Labrador is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of . As of 2025 the population ...
WEST INDIES
MEDITERRANEAN AND AFRICA
* Malta
Malta, officially the Republic of Malta, is an island country in Southern Europe located in the Mediterranean Sea, between Sicily and North Africa. It consists of an archipelago south of Italy, east of Tunisia, and north of Libya. The two ...
* Gibraltar
Gibraltar ( , ) is a British Overseas Territories, British Overseas Territory and British overseas cities, city located at the southern tip of the Iberian Peninsula, on the Bay of Gibraltar, near the exit of the Mediterranean Sea into the A ...
* Ionian Islands
The Ionian Islands (Modern Greek: , ; Ancient Greek, Katharevousa: , ) are a archipelago, group of islands in the Ionian Sea, west of mainland Greece. They are traditionally called the Heptanese ("Seven Islands"; , ''Heptanēsa'' or , ''Heptanē ...
* Sierra Leone
Sierra Leone, officially the Republic of Sierra Leone, is a country on the southwest coast of West Africa. It is bordered to the southeast by Liberia and by Guinea to the north. Sierra Leone's land area is . It has a tropical climate and envi ...
and the West African Forts, Consulates to the Barbary States
EASTERN COLONIES
* New South Wales
New South Wales (commonly abbreviated as NSW) is a States and territories of Australia, state on the Eastern states of Australia, east coast of :Australia. It borders Queensland to the north, Victoria (state), Victoria to the south, and South ...
* Van Dieman's Land
* Ceylon
Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, also known historically as Ceylon, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, separated from the Indian subcontinent, ...
* Mauritius
Mauritius, officially the Republic of Mauritius, is an island country in the Indian Ocean, about off the southeastern coast of East Africa, east of Madagascar. It includes the main island (also called Mauritius), as well as Rodrigues, Ag ...
The War Office, after 1854 and until the 1867 confederation
A confederation (also known as a confederacy or league) is a political union of sovereign states united for purposes of common action. Usually created by a treaty, confederations of states tend to be established for dealing with critical issu ...
of the ''Dominion of Canada'', was to split the military administration of the British Empire much as the War and Colonial Office had:
In February 1855, the new Secretary of State for War was additionally commissioned as Secretary at War, thus giving the Secretary of State oversight of the War Office in addition to his own department. The same procedure was followed for each of his successors, until the office of Secretary at War was abolished altogether in 1863.
In 1855, the Board of Ordnance
The Board of Ordnance was a British government body. Established in the Tudor period, it had its headquarters in the Tower of London. Its primary responsibilities were 'to act as custodian of the lands, depots and forts required for the defence ...
was abolished as a result of its perceived poor performance during the Crimean War
The Crimean War was fought between the Russian Empire and an alliance of the Ottoman Empire, the Second French Empire, the United Kingdom of Great Britain and Ireland, and the Kingdom of Sardinia (1720–1861), Kingdom of Sardinia-Piedmont fro ...
. This powerful independent body, dating from the 15th century, had been directed by the Master-General of the Ordnance, usually a very senior military officer who (unlike the Secretary at War) was often a member of the Cabinet. The disastrous campaigns of the Crimean War resulted in the consolidation of all administrative duties in 1855 as subordinate to the Secretary of State for War, a Cabinet job. He was not, however, solely responsible for the Army; the Commander-in-Chief had a virtually equal degree of responsibility. This was reduced in theory by the reforms introduced by Edward Cardwell
Edward Cardwell (178723 May 1861) was an English theologian also noted for his contributions to the study of English church history. In addition to his scholarly work, he filled various administrative positions in the University of Oxford.
...
in 1870, which subordinated the Commander-in-Chief to the Secretary for War. In practice, however, a large influence was retained by the conservative Commander-in-Chief Field Marshal Prince George, 2nd Duke of Cambridge, who held the post between 1856 and 1895. His resistance to reform caused military efficiency to lag well behind that of Britain's rivals, a problem that became obvious during the Second Boer War
The Second Boer War (, , 11 October 189931 May 1902), also known as the Boer War, Transvaal War, Anglo–Boer War, or South African War, was a conflict fought between the British Empire and the two Boer republics (the South African Republic and ...
. The situation was only remedied in 1904, when the job of Commander-in-Chief was abolished, and replaced with that of the Chief of the General Staff, which was replaced by the job of Chief of the Imperial General Staff in 1908. An Army Council was created with a format similar to that of the Board of Admiralty
The Board of Admiralty (1628–1964) was established in 1628 when Charles I put the office of Lord High Admiral into commission. As that position was not always occupied, the purpose was to enable management of the day-to-day operational requi ...
, directed by the Secretary of State for War, and an Imperial General Staff was established to coordinate Army administration. The creation of the Army Council was recommended by the War Office (Reconstitution) Committee, and formally appointed by Letters Patent
Letters patent (plurale tantum, plural form for singular and plural) are a type of legal instrument in the form of a published written order issued by a monarch, President (government title), president or other head of state, generally granti ...
dated 8 February 1904, and by Royal Warrant dated 12 February 1904.
The management of the War Office was hampered by persistent disputes between the civilian and military parts of the organisation. The government of H.H. Asquith attempted to resolve this during the First World War
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
by appointing Lord Kitchener as Secretary for War. During his tenure, the Imperial General Staff was virtually dismantled. Its role was replaced effectively by the Committee of Imperial Defence, which debated broader military issues.
The War Office decreased greatly in importance after the First World War, a fact illustrated by the drastic reductions of its staff numbers during the inter-war period. Its responsibilities and funding were also reduced. In 1936, the government of Stanley Baldwin
Stanley Baldwin, 1st Earl Baldwin of Bewdley (3 August 186714 December 1947), was a British statesman and Conservative politician who was prominent in the political leadership of the United Kingdom between the world wars. He was prime ministe ...
appointed a Minister for Co-ordination of Defence, who was not part of the War Office. When Winston Churchill
Sir Winston Leonard Spencer Churchill (30 November 1874 – 24 January 1965) was a British statesman, military officer, and writer who was Prime Minister of the United Kingdom from 1940 to 1945 (Winston Churchill in the Second World War, ...
became Prime Minister in 1940, he bypassed the War Office altogether, and appointed himself Minister of Defence (though there was, curiously, no ''ministry'' of defence until 1947). Clement Attlee
Clement Richard Attlee, 1st Earl Attlee (3 January 18838 October 1967) was a British statesman who was Prime Minister of the United Kingdom from 1945 to 1951 and Leader of the Labour Party (UK), Leader of the Labour Party from 1935 to 1955. At ...
continued this arrangement when he came to power in 1945, but appointed a separate Minister of Defence for the first time in 1947. In 1964, the present form of the Ministry of Defence was established, unifying the War Office, Admiralty, and Air Ministry.
The Old War Office building
As early as 1718 letters from the Secretary at War were addressed from "The War Office". His department had several headquarters in London until it settled at Horse Guards in Whitehall
Whitehall is a road and area in the City of Westminster, Central London, England. The road forms the first part of the A roads in Zone 3 of the Great Britain numbering scheme, A3212 road from Trafalgar Square to Chelsea, London, Chelsea. It ...
during 1722. It remained there until 1858. Then, following the dissolution of the Board of Ordnance, the War Office moved into the Board's former offices in Cumberland House, Pall Mall. Over the ensuing years it expanded into adjacent properties on Pall Mall before it was relocated to purpose-built accommodation, in what is now known as the Old War Office Building, in 1906.
Between 1906 and its abolition in 1964 the War Office was based in a large neo-Baroque building designed by William Young, completed during 1906, and located on Horse Guards Avenue at its junction with Whitehall
Whitehall is a road and area in the City of Westminster, Central London, England. The road forms the first part of the A roads in Zone 3 of the Great Britain numbering scheme, A3212 road from Trafalgar Square to Chelsea, London, Chelsea. It ...
in Central London. The construction of the building required five years to complete, at a cost of more than 1.2 million pounds. The building is somewhat oddly shaped, forming a trapezoid
In geometry, a trapezoid () in North American English, or trapezium () in British English, is a quadrilateral that has at least one pair of parallel sides.
The parallel sides are called the ''bases'' of the trapezoid. The other two sides are ...
in order to maximise the use of the irregularly shaped plot of land on which it was built: its four distinctive domes were designed as a decorative means of disguising the shape.[ It has around 1,100 rooms on seven floors.]
After 1964 the building continued to be used, under the name The Old War Office, by the Ministry of Defence.[
On 1 June 2007 the building, other than the steps that give access to it, was designated as a protected site for the purposes of Section 128 of the ]Serious Organised Crime and Police Act 2005
The Serious Organised Crime and Police Act 2005 (c. 15) (often abbreviated to SOCPA or SOCAP) is an Act of Parliament, Act of the Parliament of the United Kingdom aimed primarily at creating the Serious Organised Crime Agency. It also significan ...
. The effect was to make it a specific criminal offence for a person to trespass on the building.
In August 2013 it was announced that the building would be sold on the open market, with a goal of realising offers above 100 million pounds. On 13 December 2014 the Ministry of Defence confirmed that the building would be sold to the Hinduja Group
Hinduja Group is an Indian Conglomerate (company), conglomerate. The group is present in eleven sectors including automotive, oil and specialty chemicals, banking and finance, IT and ITeS, cyber security, healthcare, trading, infrastructure proj ...
for an undisclosed amount. The building's sale was completed on 1 March 2016 for more than 350 million pounds, on a 250-year lease, to the Hinduja Group (in partnership with OHL Developments) for conversion to a luxury hotel and residential apartments.[ The Hinduja Group and Raffles Hotels opened the hotel, named Raffles London at The OWO, in 2023.
]
War Office departments
The War Office departments were as follows:
* Office of the Secretary of State
** Military Secretary's Department (1870–1964)
* Department of the Parliamentary Under-Secretary for War
** Directorate-General of Lands (?–1923)
** Directorate of Lands (1923– )
** Directorate-General of the Territorial and Volunteer Forces (?–1921)
** Directorate-General of the Territorial Army (1921– )
* Central Department (Department of the Secretary)
** Department of the Chaplain-General
** Department of the Judge Advocate-General
** Publicity Section/Information Section
* Department of the Financial and Parliamentary Secretary (Finance Department)
** Directorate of Army Contracts (1924– )
* Imperial General Staff
** Directorate of Military Intelligence (?–1922)
** Directorate of Military Operations (?–1922)
** Directorate of Military Operations and Intelligence (1922– )
** Directorate of Military Training (1922– )
** Directorate of Army Staff Duties
* Department of the Adjutant-General
** Directorate-General of Graves Registration and Enquiries (?–1921)
** Directorate-General of Army Medical Services
** Directorate of Mobilisation
** Directorate of Organisation
** Directorate of Army Personal Service
** Directorate of Prisoners of War (?–1921)
** Directorate of Recruiting and Organisation
* Department of the Quartermaster-General
** Directorate of Equipment and Ordnance Stores (?–1927)
** Directorate of Movements
** Directorate of Quartering
** Directorate of Remounts
** Directorate of Supplies and Transport
** Controller of Surplus Stores and Salvage
** Surveyor-General of Supply (?–1921)
** Directorate-General of Army Veterinary Services
** Directorate of Works (1927– )
* Department of the Master-General of the Ordnance
** Directorate of Artillery
** Directorate of Factories
** Directorate of Fortifications and Works (?–1927)
** Directorate of Ordnance Services (1927– )
** Chief Technical Examiner for Works Services
* Directorate of Military Aeronautics (1913–1918)
See also
* Directorate of Military Intelligence (United Kingdom)
The Directorate of Military Intelligence (DMI) was a department of the United Kingdom of Great Britain and Ireland, British War Office.
Over its lifetime the Directorate underwent a number of organisational changes, absorbing and shedding se ...
* Secretary at War
* United States Department of War
The United States Department of War, also called the War Department (and occasionally War Office in the early years), was the United States Cabinet department originally responsible for the operation and maintenance of the United States Army, als ...
References
Sources
*
*
* https://Discovery.NationalArchives.gov.uk/details/r/C259pen-government-licence/version/3/ (Open Government Licence v3.0) © Crown copyright
External links
The Old War Office building – a history
( — at MoD.uk)
The OWO website
Raffles London at The OWO
{{Portal bar, United Kingdom, Politics, London
Government agencies established in 1684
Government agencies disestablished in 1964
1684 establishments in England
1964 disestablishments in the United Kingdom
1906 establishments in England
Government buildings completed in 1906
British defence policymaking
History of the British Army
Military history of the United Kingdom
Political history of the United Kingdom
Grade II* listed buildings in the City of Westminster
National government buildings in London
Edwardian architecture in London
Neoclassical architecture in London
Defunct departments of the Government of the United Kingdom
Whitehall