War Office

The War Office[1] was a Department of the British Government responsible for the administration of the British Army between 1857 and 1964, when its functions were transferred to the Ministry of Defence. It was equivalent to the Admiralty, responsible for the Royal Navy, and the (much later) Air Ministry, which oversaw the Royal Air Force. The name "War Office" is also given to the former home of the department, the War Office building, located at the junction of Horse Guards Avenue and Whitehall in central London. The landmark building was sold on 1 March 2016 by HM Government for more than £350 million, on a 250-year lease for conversion into a luxury hotel and residential apartments.

War Office
Royal Coat of Arms as used by Her Majesty's Government
Department overview
Preceding Department
  • Various
Superseding agency
JurisdictionGovernment of the United Kingdom
HeadquartersWar Office building
Department executive
Parent DepartmentHM Government

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, 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 Department, the Board of General Officers, the Judge Advocate General of the Armed Forces, the Commissary General of Muster, the Paymaster General of the forces and (particularly with regard to the Militia) the Home Office.[2]

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 amalgamated, and thereafter the terms War Office and War Department were used somewhat interchangeably.[3]


The War Office developed from the Council of War, an ad hoc grouping of the King and his senior military commanders which managed the Kingdom of England's frequent 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 lengths of time, 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.[3]

The department of the Secretary at War was referred to as the 'Warr Office' (sic) from as early as 1694;[3] its foundation has traditionally been ascribed to William Blathwayt, who had accompanied King William III during the Nine Years' War 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.[4]

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 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 and Home Office).[5]

From 1704 to 1855, the job 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, an arrangement which only ceased with the establishment of the Colonial Office in 1854). 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).[6]

In 1855 the Board of Ordnance was abolished as a result of its perceived poor performance during the Crimean War. 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.[7] 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 in 1870, which subordinated the Commander-in-Chief to the Secretary for War. In practice, however, a huge amount of influence was retained by the exceedingly conservative Commander-in-Chief Field Marshal Prince George, 2nd Duke of Cambridge, who had the job between 1856 and 1895. His resistance to reform caused military efficiency to lag well behind that of Britain's rivals, a problem which became obvious during the Second Boer War. 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, 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 dated 8 February 1904 and by Royal Warrant dated 12 February 1904.[8]

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 by appointing Lord Kitchener as Secretary for War.[9] 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.[10]

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 appointed a Minister for Co-ordination of Defence, who was not part of the War Office. When Winston Churchill 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).[11] Clement Attlee 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.[12]

Old War Office Building

As early as 1718 letters from the Secretary at War were addressed from 'The War Office'. His department had had several London homes until it settled at Horse Guards in Whitehall during 1722, where it was to remain 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 finally being relocated to a purpose-built accommodation in what is now known as the Old War Office Building in 1906.[13]

Between 1906 and its abolition in 1964, the War Office was based in a large neo-Baroque building, completed during 1906, located on Horse Guards Avenue at its junction with Whitehall in central London. The construction of the War Office building required five years to complete at what was then a huge cost of more than £1.2 million.[14] The building is somewhat oddly shaped, forming a trapezium shape in order to maximise the usage 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 building's shape.[15] It has around 1,100 rooms on seven floors.[16]

After 1964 the building continued to be used by the Ministry of Defence by the name Old War Office.[17]

On 1 June 2007 the building (other than the steps that give access to it) were designated as a protected site for the purposes of Section 128 of the Serious Organised Crime and Police Act 2005. The effect of the act was to make it a specific criminal offence for a person to trespass into the building.[18]

In August 2013 it was announced that the building would be sold on the open market with the goal of realising offers in excess of £100 million.[19] On 13 December 2014 the Ministry of Defence confirmed that the War Office building would be sold to the Hinduja Group for an undisclosed amount.[20] The building was sold on 1 March 2016 for more than £350 million, on a 250-year lease, to the Hinduja Group and OHL Developments for conversion to a luxury hotel and residential apartments.[16]

War Office departments

The war office departments were as follows:[21]

See also


  1. Archives, The National. "Records created or inherited by the War Office, Armed Forces, Judge Advocate General, and related bodies". discovery.nationalarchives.gov.uk. National Archives, 1568–2007. Retrieved 2 June 2017.
  2. Archives, The National. "Records created or inherited by the War Office, Armed Forces, Judge Advocate General, and related bodies". discovery.nationalarchives.gov.uk. The National Archives, 1568–2007. Retrieved 2 June 2017. This article contains text from this source, which is available under the Open Government Licence v3.0. © Crown copyright
  3. Roper, Michael (1998). The Records of the War Office and Related Departments, 1660-1964. Kew, Surrey: Public Record Office.
  4. Courtney, William Prideaux (1886). "Blathwayt, William" . In Stephen, Leslie (ed.). Dictionary of National Biography. 5. London: Smith, Elder & Co. p. 206.
  5. Sainty, J. C. "Lists of appointments British History Online". www.british-history.ac.uk. Originally published by University of London, London, 1973. Retrieved 12 March 2017.
  6. "Senior Cabinet Posts". National Archives. Retrieved 18 July 2018.
  7. "Timeline". Sappers and Miners of Western Australia. Retrieved 18 July 2018.
  8. Clark, p. 442
  9. Faught, p. 189
  10. Johnson, Franklyn Arthur (1960). Defence by Committee: The British Committee of Imperial Defence, 1885-1959. London, New York: Oxford University Press.
  11. "Winston Churchill 1940". National Archives. Retrieved 18 July 2018.
  12. "History of the Ministry of Defence" (PDF). Ministry of Defence. Retrieved 18 July 2018.
  13. Winterbottom, Derek (2016). The Grand Old Duke of York: A Life of Prince Frederick, Duke of York and Albany. Pen and Sword. ISBN 978-1473845770.
  14. "History of the Old War Office Building" (PDF). p. 8. Retrieved 18 July 2018.
  15. "History of the Old War Office Building" (PDF). p. 7. Retrieved 18 July 2018.
  16. "Ministry of Defence completes sale of old War Office". Ministry of Defence. Retrieved 15 May 2016.
  17. "History of the Old War Office Building" (PDF). p. 15. Retrieved 18 July 2018.
  18. "Home Office Circular 018 / 2007 (Trespass on protected sites – sections 128–131 of the Serious Organised Crime and Police Act 2005)". GOV.UK. Home Office. 22 May 2007. Retrieved 6 August 2017.
  19. Ben Farmer, War Office for sale as part of cost cutting drive, Sunday Telegraph, 18 August 2013
  20. "Churchill's Old War Office building sold off". BBC News. 13 December 2014. Retrieved 14 December 2014.
  21. "Records of the Chief of the (Imperial) General Staff and its directorates". National Archives. Retrieved 18 July 2018.

This article contains text from this source http://discovery.nationalarchives.gov.uk/details/r/C259pen-government-licence/version/3/ Open Government Licence v3.0]. © Crown copyright.


  • Clark, Andrew (20 February 1904). The Army Council and Military Medical Administration. The British Medical Journal. 1. p. 442. JSTOR 20279611.
  • Faught, C. Brad (2016). Kitchener: Hero and Anti-Hero. London and New York, I.B. Tauris. ISBN 978-1784533502.

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