page_title: Allies of World War I
section_title: United Kingdom
hierarchical_section_title: Allies of World War I / Leaders / British Empire / United Kingdom
caption_attribution_description: English: The Cooperation of the Allied Forces on the Western Front, 1914-1918 Marshal Ferdinand Foch, the Supreme Commander of the Allied Forces, and Field Marshal Douglas Haig, the C-in-C of the British Army, inspecting the Guard of Honour of the C Company, 6th Battalion, Gordon Highlanders at Iwuy, 15 November 1918.
context_page_description: The Allies of World War I or Entente Powers were the coalition led by France, Britain, Russia, Italy, Japan, and the United States against the Central Powers of Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria during the First World War.
  By the end of the first decade of the 20th century, the major European powers were divided between the Triple Entente and the Triple Alliance. The Triple Entente was made up of France, Britain, and Russia. The Triple Alliance was originally composed of Germany, Austria–Hungary, and Italy, which remained neutral in 1914. As the war progressed, each coalition added new members. Japan joined the Entente in 1914. After proclaiming its neutrality at the beginning of the war, Italy also joined the Entente in 1915. The term "Allies" became more widely used than "Entente", although the Principal Allies of France, Britain, Russia, Italy, and Japan were sometimes known also as Quintuple Entente. The United States joined in 1917 as an "associated power" rather than an official ally.
  Other "associated members" included Serbia, Belgium, Montenegro, Asir, Nejd and Hasa, Portugal, Romania, Hejaz, Panama,
context_section_description: George V – King of the United Kingdom, Emperor of India
  H. H. Asquith – Prime Minister of the United Kingdom (until 5 December 1916)
  David Lloyd George – Prime Minister of the United Kingdom (from 7 December 1916)
  Field Marshal Horatio Herbert Kitchener – Secretary of State for War (5 August 1914 – 5 June 1916)
  General William Robertson – Chief of the Imperial General Staff (23 December 1915 – February 1918)
  General Henry Wilson – Chief of the Imperial General Staff (February 1918 – February 1922)
  Field Marshal John French – Commander-in-Chief of the British Expeditionary Force (4 August 1914 – 15 December 1915)
  General / Field Marshal Douglas Haig – Commander-in-Chief of the British Expeditionary Force (15 December 1915 – 11 November 1918)
  General Sir David Henderson – Director-General of Military Aeronautics
  General Hugh Trenchard – Commander of Royal Flying Corps – (August 1915 – January 1918) and Chief of the Air Staff of the combined Royal Air Force – 1 April 1918 – 13 April 1918
  Brigadier General Sir Frederick Sykes – Chief of the Air Staff – 13 April 1918 through 11 November 1918 (post-war to 31 March 1919)
  Winston Churchill – First Lord of the Admiralty – (1911 – May 1915)
  Arthur Balfour- First Lord of the Admiralty – (May 1915 – December 1916)
  Edward Carson – First Lord of the Admiralty – (10 December 1916 – 17 July 1917)
  Eric Geddes – First Lord of the Admiralty – (July 1917 – January 1919)
  Admiral of the Fleet John "Jackie" Fisher – First Sea Lord – (1914 – May 1915)
  Admiral Henry Jackson – First Sea Lord – (May 1915 – November 1916)
  Admiral John Jellicoe – Commander of the Grand Fleet (August 1914 – November 1916); First Sea Lord (November 1916 – December 1917)
  Admiral Rosslyn Wemyss – First Sea Lord (December 1917 – November 1919)
  Admiral David Beatty – Commander of the Grand Fleet (November 1916 – April 1919)
  General Archibald Murray – Commander of the Egyptian Expeditionary Force (January 1916 – June 1917)
  General Edmund Allenby – Commander of the Egyptian Expeditionary Force (June 1917 – November 1918)
  Eric John Eagles Swayne – commander of the British forces in the Somaliland Campaign
  William Peyton – commander and military secretary to the British Expeditionary Force
caption: Douglas Haig and Ferdinand Foch inspecting the Gordon Highlanders, 1918
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