We’re Here Because We’re Here was an artwork in the form of an event, devised by Jeremy Deller, that occurred across the United Kingdom on 1 July 2016, the 100th anniversary of the Battle of the Somme, which it commemorated.
The Canadian Expeditionary Force (CEF) was the designation of the field force created by Canada for service overseas in the First World War.
 The force fielded several combat formations on the Western Front in France and Belgium, the largest of which was the Canadian Corps, consisting of four divisions.
 The Canadian Cavalry Brigade and the Canadian Independent Force, which were independent of the Canadian Corps, also fought on the Western Front.
 The CEF also had a large reserve and training organization in England, and a recruiting organization in Canada.
 In the later stages of the European war, particularly after their success at Vimy Ridge and Passchendaele, the Canadian Corps was regarded by friend and foe alike as the most effective Allied military formation on the Western Front.
 The Germans went so far as to call them "storm troopers" for their great combat efficiency.
 In August 1918, the CEF's Canadian Siberian Expeditionary Force travelled to revolution-torn Russia.
 It reinforced an anti-Bolshevik garrison in Vladivostok during the winter of 1918–19.
 At this time, another force of Canadian soldiers were placed in Archangel, where they fought against Bolsheviks.
The British cavalry were the first British Army units to see action during the First World War.
 Captain Hornby of the 4th (Royal Irish) Dragoon Guards is reputed to have been the first British soldier to kill a German soldier, using his sword, and Drummer Edward Thomas of the same regiment is reputed to have fired the first British shot shortly after 06:30 on 22 August 1914, near the Belgian village of Casteau.
 The following Battle of Mons was the first engagement fought by British soldiers in Western Europe since the Battle of Waterloo, ninety-nine years earlier.
 In the first year of the war in France nine cavalry brigades were formed for three British cavalry divisions.
 Other regiments served in six brigades of the two British Indian Army cavalry divisions that were formed for service on the Western Front.
 Three regiments also fought in the campaign in Mesopotamia, the only other theatre of the First World War where British cavalry served.
General Sir John Monash, ( ; 27 June 1865 – 8 October 1931) was a civil engineer and an Australian military commander of the First World War.
 He commanded the 13th Infantry Brigade before the war and then, shortly after its outbreak, became commander of the 4th Brigade in Egypt, with whom he took part in the Gallipoli campaign.
 In July 1916 he took charge of the newly raised 3rd Division in northwestern France and in May 1918 became commander of the Australian Corps, at the time the largest corps on the Western Front.
 The successful Allied attack at the Battle of Amiens on 8 August 1918, which expedited the end of the war, was planned by Monash and spearheaded by British forces including the Australian and Canadian Corps under Monash and Arthur Currie.
 Monash is considered one of the best Allied generals of the First World War and the most famous commander in Australian history.
Air Commodore Raymond James Brownell, {'1': ", '2': ", '3': ", '4': "} (17 May 1894 – 12 April 1974) was a senior officer in the Royal Australian Air Force (RAAF) and a First World War flying ace.
 Born in Hobart, Tasmania, Brownell was working as a clerk with a firm of accountants when he enlisted in the Australian Imperial Force on the outbreak of the First World War.
 He served during the Gallipoli Campaign before transferring to the Western Front.
 Awarded the Military Medal for his actions during the Battle of Pozières, he was accepted for a transfer to the Royal Flying Corps in 1917.
 Brownell undertook flight training in the United Kingdom.
 Commissioned as a second lieutenant, he was posted for operational service over the Western Front in September 1917.
 Moving with his squadron to Italy, he was awarded the Military Cross and credited with shooting down 12 aircraft by war's end.
 Taking his discharge in 1919, Brownell returned to Australia.
Many British nationals from the United Kingdom or colonies who were resident in Canada during the First World War joined the Canadian Expeditionary Force, which was deployed to the Western Front.
 A sizeable percentage of Bermuda's volunteers who served in the war joined the CEF or the Royal Canadian Navy (RCN), either because they were resident in Canada already, or because Canada was the easiest other part of the British Empire and Commonwealth to reach from Bermuda (1,239 kilometres (770 miles) from Nova Scotia).
 As several CEF battalions were posted to the Bermuda Garrison before proceeding to France, islanders were also able to enlist there.
 Although the Bermuda Militia Artillery (BMA) and Bermuda Volunteer Rifle Corps (BVRC) both sent contingents to the Western Front, the first would not arrive there until June 1915.
 By then, many Bermudians had already been serving on the Western Front in the CEF for months.
 No further contingents were sent to France by the BVRC after 1916, however forty-seven BVRC NCOs and Riflemen (Privates) were permitted to re-enlist in Canada during the course of the war.
 Although some enlisted in British Army organs in Canada, including the Royal Flying Corps, most joined the Canadian Expeditionary Force.
 Bermudians in the CEF enlisted under the same terms as Canadians.
The Western Front was the main theatre of war during the First World War.
 Following the outbreak of war in August 1914, the German Army opened the Western Front by invading Luxembourg and Belgium, then gaining military control of important industrial regions in France.
 The tide of the advance was dramatically turned with the Battle of the Marne.
 Following the Race to the Sea, both sides dug in along a meandering line of fortified trenches, stretching from the North Sea to the Swiss frontier with France, which changed little except during early 1917 and in 1918.
"Lions led by donkeys" is a phrase popularly used to describe the British infantry of World War I and to blame the generals who led them.
 The contention is that the brave soldiers (lions) were sent to their deaths by incompetent and indifferent leaders (donkeys).
 The phrase was the source of the title of one of the most scathing examinations of British First World War generals, The Donkeys—a study of Western Front offensives—by politician and writer of military histories Alan Clark.
 The book was representative of much of the First World War history produced in the 1960s and was not outside the mainstream—Basil Liddell Hart vetted Clark's drafts—and helped to form a popular view of the First World War (in the English-speaking world) in the decades that followed.
 However, the work's viewpoint of incompetent military leaders was never accepted by some mainstream historians, and both the book and its viewpoint have been subject to attempts at revisionism.
The Western Front (Russian: Западный фронт ) was an army group in the armed forces of the Russian Empire during the First World War.
 It was established in August 1915 when the Northwestern Front was split into the Northern Front and Western Front, and was disbanded in 1918.
 From the time of its formation until the final year of its existence, the Western Front's field headquarters was in Smolensk, but it was later moved to Minsk.
The Battle of the Somme (French: "Bataille de la Somme" , German: "Schlacht an der Somme" ), also known as the Somme Offensive, was a battle of the First World War fought by the armies of the British and French empires against the German Empire.
 It took place between 1 July and 18 November 1916 on both sides of the upper reaches of the River Somme in France.
 The battle was intended to hasten a victory for the Allies and was the largest battle of the First World War on the Western Front.
 More than 3 million men fought in this battle and one million men were wounded or killed, making it one of the bloodiest battles in human history.

Question: Who was responsible for creating the artwork that was a commemoration of the largest battle of the First World War on the Western Front?
Answer: Jeremy Deller