The Third Army was a

field army A field army (or numbered army or simply army) is a military formation in many armed forces, composed of two or more corps and may be subordinate to an army group. Likewise, air armies are equivalent formation within some air forces, and with ...

of the

British Army during World War I The British Army during the First World War fought the largest and most costly war in its long history. Unlike the French and German Armies, the British Army was made up exclusively of volunteers—as opposed to conscripts—at the beginnin ...

that saw active service on the Western Front throughout the war.

First World War

The Third Army was part of the

and was formed in France on 13 July 1915, under the command of

Lieutenant-General Lieutenant general (Lt Gen, LTG and similar) is a three-star military rank (NATO code OF-8) used in many countries. The rank traces its origins to the Middle Ages, where the title of lieutenant general was held by the second-in-command on the ...

Charles Monro. During August 1915 the Third Army took over trench line south of the

French Tenth Army The Tenth Army (french: Xe Armée) was a Field army of the French Army during World War I and World War II. World War I The Tenth Army, first called ''détachement d'armée Maud'huy'', was formed on 1 October 1914 during the Race to the Sea. It ...

, which had to keep in position for the forthcoming autumn offensive. This made the Third Army geographically separate from the other British Armies for the time being. This remained the case until March 1916, when the French Tenth Army was redeployed because of French losses at Verdun and the

British Fourth Army The Fourth Army was a field army that formed part of the British Expeditionary Force during the First World War. The Fourth Army was formed on 5 February 1916 under the command of General Sir Henry Rawlinson to carry out the main British contribu ...

was formed in preparation for the

Battle of the Somme The Battle of the Somme ( French: Bataille de la Somme), also known as the Somme offensive, was a battle of the First World War fought by the armies of the British Empire and French Third Republic against the German Empire. It took place bet ...

. The battles it took part in on the Western Front included: *

* Battle of Cambrai *

Second Battle of Arras The Battle of Arras (also known as the Second Battle of Arras) was a British Empire, British offensive on the Western Front (World War I), Western Front during the First World War. From 9 April to 16 May 1917, British troops attacked German Empi ...

(April 1917) *

Battle of Passchendaele The Third Battle of Ypres (german: link=no, Dritte Flandernschlacht; french: link=no, Troisième Bataille des Flandres; nl, Derde Slag om Ieper), also known as the Battle of Passchendaele (), was a campaign of the First World War, fought by t ...

* Battle of Amiens (August 1918) *

Hundred Days Offensive The Hundred Days Offensive (8 August to 11 November 1918) was a series of massive Allies of World War I, Allied offensives that ended the First World War. Beginning with the Battle of Amiens (1918), Battle of Amiens (8–12 August) on the Wester ...

Order of battle

Third Army Order of Battle, August 1918. * IV Corps ** 37th Division **

42nd (East Lancashire) Infantry Division The 42nd (East Lancashire) Infantry Division was an infantry Division (military), division of the British Army. The division was raised in 1908 as part of the Territorial Force (TF), originally as the East Lancashire Division, and was redesignat ...

62nd (2nd West Riding) Division The 62nd (2nd West Riding) Division was an infantry division of the British Army that saw active service on the Western Front during the First World War. History During the First World War the division fought on the Western Front at Bullec ...

New Zealand Division The New Zealand Division was an infantry division of the New Zealand Expeditionary Force raised for service in the First World War. It was formed in Egypt in early 1916 when the New Zealand and Australian Division was renamed after the detachmen ...

** 5th Division * V Corps ** 21st Division **

38th (Welsh) Infantry Division The 38th (Welsh) Division (initially the 43rd Division, later the 38th (Welsh) Infantry Division and then the 38th Infantry (Reserve) Division) of the British Army was active during both the World War I, First and World War II, Second World Wa ...

** 17th (Northern) Division ** 33rd Division * VI Corps **

Guards Division The Guards Division is an administrative unit of the British Army responsible for the training and administration of the regiments of Foot Guards and the London Guards reserve battalion. The Guards Division is responsible for providing two b ...

** 2nd Division ** 3rd Division ** 59th (2nd North Midland) Division * XVII Corps **

51st (Highland) Division The 51st (Highland) Division was an infantry division of the British Army that fought on the Western Front in France during the First World War from 1915 to 1918. The division was raised in 1908, upon the creation of the Territorial Force, as ...

** 52nd Division **

56th (London) Infantry Division The 56th (London) Infantry Division was a Territorial Army infantry division of the British Army, which served under several different titles and designations. The division served in the trenches of the Western Front during the First World War. ...

** 57th (2nd West Lancashire) Division **

63rd (Royal Naval) Division The 63rd (Royal Naval) Division was a United Kingdom infantry division of the First World War. It was originally formed as the Royal Naval Division at the outbreak of the war, from Royal Navy and Royal Marine reservists and volunteers, who wer ...

Commanders

* General Charles Monro (July 1915 – September 1915) * General

Edmund Allenby Field Marshal Edmund Henry Hynman Allenby, 1st Viscount Allenby, (23 April 1861 – 14 May 1936) was a senior British Army officer and Imperial Governor. He fought in the Second Boer War and also in the First World War, in which he led th ...

(23 October 1915 – 9 June 1917) * General Sir

Julian Byng Field Marshal Julian Hedworth George Byng, 1st Viscount Byng of Vimy, (11 September 1862 – 6 June 1935) was a British Army officer who served as Governor General of Canada, the List of governors general of Canada#Governors General of Canada, ...

(9 June 1917 – 22 March 1919)

References

Sources

* 03 3 {{UK-mil-unit-stub