British Expeditionary Force
Encyclopedia
Principle battles of
the British Expeditionary Force
1914
Battle of Mons
Battle of Mons
The Battle of Mons was the first major action of the British Expeditionary Force in the First World War. It was a subsidiary action of the Battle of the Frontiers, in which the Allies clashed with Germany on the French borders. At Mons, the British army attempted to hold the line of the...


Battle of Le Cateau
Battle of Le Cateau
The Battle of Le Cateau was fought on 26 August 1914, after the British, French and Belgians retreated from the Battle of Mons and had set up defensive positions in a fighting withdrawal against the German advance at Le Cateau-Cambrésis....


First Battle of the Marne
First Battle of the Marne
The Battle of the Marne was a First World War battle fought between 5 and 12 September 1914. It resulted in an Allied victory against the German Army under Chief of Staff Helmuth von Moltke the Younger. The battle effectively ended the month long German offensive that opened the war and had...


First Battle of the Aisne
First Battle of the Aisne
The First Battle of the Aisne was the Allied follow-up offensive against the right wing of the German First Army & Second Army as they retreated after the First Battle of the Marne earlier in September 1914...


Battle of La Bassée
Battle of La Bassée
The Battle of La Bassée was a battle between British and German forces in northern France in October 1914, and was part of the Race to the Sea....


First Battle of Ypres
First Battle of Ypres
The First Battle of Ypres, also called the First Battle of Flanders , was a First World War battle fought for the strategic town of Ypres in western Belgium...


1915
Battle of Neuve Chapelle
Battle of Neuve Chapelle
The Battles of Neuve Chapelle and Artois was a battle in the First World War. It was a British offensive in the Artois region and broke through at Neuve-Chapelle but they were unable to exploit the advantage.The battle began on 10 March 1915...


Second Battle of Ypres
Second Battle of Ypres
The Second Battle of Ypres was the first time Germany used poison gas on a large scale on the Western Front in the First World War and the first time a former colonial force pushed back a major European power on European soil, which occurred in the battle of St...


Battle of Festubert
Battle of Festubert
The Battle of Festubert was an attack by the British army in the Artois region of France on the western front during World War I. It began on May 15, 1915 and continued until May 25.-Context:...


Battle of Loos
Battle of Loos
The Battle of Loos was one of the major British offensives mounted on the Western Front in 1915 during World War I. It marked the first time the British used poison gas during the war, and is also famous for the fact that it witnessed the first large-scale use of 'new' or Kitchener's Army...


1916
Battle of the Somme
Battle of Fromelles
Battle of Fromelles
The Battle of Fromelles, sometimes known as the Action at Fromelles or the Battle of Fleurbaix , occurred in France between 19 July and 20 July 1916, during World War I...


1917
Battle of Arras
Battle of Arras (1917)
The Battle of Arras was a British offensive during the First World War. From 9 April to 16 May 1917, British, Canadian, New Zealand, Newfoundland, and Australian troops attacked German trenches near the French city of Arras on the Western Front....


Battle of Messines
Battle of Messines
The Battle of Messines was a battle of the Western front of the First World War. It began on 7 June 1917 when the British Second Army under the command of General Herbert Plumer launched an offensive near the village of Mesen in West Flanders, Belgium...


Battle of Passchendale
First Battle of Cambrai
1918
Second Battle of the Somme
Second Battle of the Somme (1918)
During the First World War, the Second Battle of the Somme of 1918 was fought on the Western Front from the end of the summer, in the basin of the Somme River...


Battle of Lys
Second Battle of the Aisne
Second Battle of the Aisne
The Second Battle of the Aisne , was the massive main assault of the French military's Nivelle Offensive or Chemin des Dames Offensive in 1917 during World War I....


Second battle of the Marne
Second Battle of the Marne
The Second Battle of the Marne , or Battle of Reims was the last major German Spring Offensive on the Western Front during the First World War. The German attack failed when an Allied counterattack led by France overwhelmed the Germans, inflicting severe casualties...


Hundred Days Offensive
Hundred Days Offensive
The Hundred Days Offensive was the final period of the First World War, during which the Allies launched a series of offensives against the Central Powers on the Western Front from 8 August to 11 November 1918, beginning with the Battle of Amiens. The offensive forced the German armies to retreat...


Battle of Amiens
Battle of Ephey
Second Battle of Cambrai
Battle of Cambrai (1918)
The Battle of Cambrai was a battle between troops of the British First, Third and Fourth Armies and German Empire forces during the Hundred Days Offensive of the First World War. The battle took place in and around the French city of Cambrai, between 8 and 10 October 1918...


Battle of Sambre
Battle of the Sambre (1918)
The Second Battle of the Sambre was part of the final European Allied offensives of World War I.-Background:...



The British Expeditionary Force or BEF was the force sent to the Western Front
Western Front (World War I)
Following the outbreak of World War I in 1914, the German Army opened the Western Front by first 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...

 during World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

. Planning for a British Expeditionary Force
Expeditionary warfare
Expeditionary warfare is used to describe the organization of a state's military to fight abroad, especially when deployed to fight away from its established bases at home or abroad. Expeditionary forces were in part the antecedent of the modern concept of Rapid Deployment Forces...

 began with the Haldane reforms
Haldane Reforms
The Haldane Reforms were a series of far-ranging reforms of the British Army made from 1906 to 1912, and named after the Secretary of State for War, Richard Burdon Haldane...

 of the British Army carried out by the Secretary of State for War
Secretary of State for War
The position of Secretary of State for War, commonly called War Secretary, was a British cabinet-level position, first held by Henry Dundas . In 1801 the post became that of Secretary of State for War and the Colonies. The position was re-instated in 1854...

 Richard Haldane following the Second Boer War
Second Boer War
The Second Boer War was fought from 11 October 1899 until 31 May 1902 between the British Empire and the Afrikaans-speaking Dutch settlers of two independent Boer republics, the South African Republic and the Orange Free State...

 (1899–1902).

The term "British Expeditionary Force" is often used to refer only to the forces present in France prior to the end of the First Battle of Ypres
First Battle of Ypres
The First Battle of Ypres, also called the First Battle of Flanders , was a First World War battle fought for the strategic town of Ypres in western Belgium...

 on 22 November 1914. By the end of 1914—after the battles of Mons
Battle of Mons
The Battle of Mons was the first major action of the British Expeditionary Force in the First World War. It was a subsidiary action of the Battle of the Frontiers, in which the Allies clashed with Germany on the French borders. At Mons, the British army attempted to hold the line of the...

, the Le Cateau
Battle of Le Cateau
The Battle of Le Cateau was fought on 26 August 1914, after the British, French and Belgians retreated from the Battle of Mons and had set up defensive positions in a fighting withdrawal against the German advance at Le Cateau-Cambrésis....

, the Aisne
First Battle of the Aisne
The First Battle of the Aisne was the Allied follow-up offensive against the right wing of the German First Army & Second Army as they retreated after the First Battle of the Marne earlier in September 1914...

 and Ypres
First Battle of Ypres
The First Battle of Ypres, also called the First Battle of Flanders , was a First World War battle fought for the strategic town of Ypres in western Belgium...

—the old regular British army had been wiped out, although it managed to stop the German advance. An alternative endpoint of the BEF was 26 December 1914, when it was divided into the First
British First Army
The First Army was a field army of the British Army that existed during the First and Second World Wars. Despite being a British command, the First Army also included Indian and Portuguese forces during the First World War and American and French during the Second World War.-First World War:The...

 and Second
British Second Army
The British Second Army was active during both the First and Second World Wars. During the First World War the army was active on the Western Front and in Italy...

 Armies (a third
British Third Army
-First World War :The Third Army was part of the British Army during World War I and was formed in France on 13 July 1915. The battles it took part in on the Western Front included:*Battle of the Somme*Battle of Cambrai*Second Battle of Arras...

, fourth
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 contribution to the Battle of the Somme.-History:The Fourth...

 and fifth
British Fifth Army
The Fifth Army was a field army of the British Army during World War I and part of the British Expeditionary Force during the First World War.-History:...

 being created later in the war). B.E.F. remained the official name of the British Army in France and Flanders
Flanders
Flanders is the community of the Flemings but also one of the institutions in Belgium, and a geographical region located in parts of present-day Belgium, France and the Netherlands. "Flanders" can also refer to the northern part of Belgium that contains Brussels, Bruges, Ghent and Antwerp...

 throughout the First World War.

German Emperor Kaiser Wilhelm, who was famously dismissive of the BEF, reportedly issued an order on 19 August 1914 to "exterminate...the treacherous English and walk over General French's
John French, 1st Earl of Ypres
Field Marshal John Denton Pinkstone French, 1st Earl of Ypres, KP, GCB, OM, GCVO, KCMG, ADC, PC , known as The Viscount French between 1916 and 1922, was a British and Anglo-Irish officer...

 contemptible little army". Hence, in later years, the survivors of the regular army dubbed themselves "The Old Contemptibles". No evidence of any such order being issued by the Kaiser has ever been found. It was likely a British propaganda invention, albeit one often repeated as fact.

Formation

Under the terms of the Entente Cordiale
Entente Cordiale
The Entente Cordiale was a series of agreements signed on 8 April 1904 between the United Kingdom and the French Republic. Beyond the immediate concerns of colonial expansion addressed by the agreement, the signing of the Entente Cordiale marked the end of almost a millennium of intermittent...

, the British Army's role in a European war was to embark soldiers of the British Expeditionary Force, which consisted of six infantry divisions and five cavalry brigades that were arranged into the I Corps and the II Corps. In October 1914, the 7th Division arrived in France, forming the basis of the III Corps and the cavalry had grown to form the Cavalry Corps
Cavalry Corps (United Kingdom)
The Cavalry Corps was a formation of the British Army during World War I. and part of the British Expeditionary Force. The corps was formed in France in October 1914, under General Sir Edmund Allenby...

 of three divisions. By December 1914, the BEF had expanded to such an extent that the First Army and the Second Army were formed.

By the end of 1914, after the battles of Mons
Battle of Mons
The Battle of Mons was the first major action of the British Expeditionary Force in the First World War. It was a subsidiary action of the Battle of the Frontiers, in which the Allies clashed with Germany on the French borders. At Mons, the British army attempted to hold the line of the...

, Le Cateau
Battle of Le Cateau
The Battle of Le Cateau was fought on 26 August 1914, after the British, French and Belgians retreated from the Battle of Mons and had set up defensive positions in a fighting withdrawal against the German advance at Le Cateau-Cambrésis....

, the Aisne
First Battle of the Aisne
The First Battle of the Aisne was the Allied follow-up offensive against the right wing of the German First Army & Second Army as they retreated after the First Battle of the Marne earlier in September 1914...

 and Ypres
First Battle of Ypres
The First Battle of Ypres, also called the First Battle of Flanders , was a First World War battle fought for the strategic town of Ypres in western Belgium...

, the old regular British Army had been wiped out but had managed to help stop the German advance.

Command structure

The force was commanded by Field Marshal Sir John French
John French, 1st Earl of Ypres
Field Marshal John Denton Pinkstone French, 1st Earl of Ypres, KP, GCB, OM, GCVO, KCMG, ADC, PC , known as The Viscount French between 1916 and 1922, was a British and Anglo-Irish officer...

 until December 1915, when he was replaced by General Sir Douglas Haig
Douglas Haig, 1st Earl Haig
Field Marshal Douglas Haig, 1st Earl Haig, KT, GCB, OM, GCVO, KCIE, ADC, was a British senior officer during World War I. He commanded the British Expeditionary Force from 1915 to the end of the War...

. The BEF's Chief of Staff on mobilisation was General Archibald Murray
Archibald Murray
General Sir Archibald James Murray, GCMG, KCB, CVO, DSO was a British Army officer during World War I, most famous for his commanding the Egyptian Expeditionary Force from 1916 to 1917.-Army career:...

. He was replaced in January 1915 by General William Robertson. Lieutenant-General Launcelot Kiggell
Launcelot Kiggell
Lieutenant General Sir Launcelot Edward Kiggell KCB KCMG was a British Army officer who became Lieutenant Governor of Guernsey.-Military career:Kiggell was commissioned into the Royal Warwickshire Regiment in 1882...

 then served as Chief of Staff from December 1915, to the Armistice. The two initial Army Corps were commanded by Douglas Haig
Douglas Haig
Douglas Haig, 1st Earl Haig was a British soldier and senior commander during World War I.Douglas Haig may also refer to:* Club Atlético Douglas Haig, a football club from Argentina* Douglas Haig , American actor...

 (I Corps) and Horace Smith-Dorrien
Horace Smith-Dorrien
General Sir Horace Lockwood Smith-Dorrien GCB, GCMG, DSO, ADC was a British soldier and commander of the British II Corps and Second Army of the BEF during World War I.-Early life and career:...

 (II Corps).

Kitchener's New Army

As the Regular Army's strength declined, the numbers were made up, first by the Territorial Force, then by volunteers from Field Marshal Kitchener's New Army
Kitchener's Army
The New Army, often referred to as Kitchener's Army or, disparagingly, Kitchener's Mob, was an all-volunteer army formed in the United Kingdom following the outbreak of hostilities in the First World War...

.
By the end of August 1914, he had raised six new divisions and by March 1915, the number of divisions had increased to 29. The Territorial Force was also expanded, raising second and third line battalions and forming eight new divisions, which supplemented its peacetime strength of 14 divisions. The Third Army was formed in July 1915 and with the influx of troops from Kitchener's volunteers and further reorganization, the Fourth Army and the Reserve Army, became the Fifth Army in 1916.

Growth during the War

The BEF grew from six divisions of British regular army and reserves in 1914, to encompass the British Empire's war effort on the Western front
Western Front (World War I)
Following the outbreak of World War I in 1914, the German Army opened the Western Front by first 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...

 in 1918 and some of its allies. Over the course of the war 5,399,563 men served with the BEF, the maximum strength being 2,046,901 men.

First Army

The First Army
British First Army
The First Army was a field army of the British Army that existed during the First and Second World Wars. Despite being a British command, the First Army also included Indian and Portuguese forces during the First World War and American and French during the Second World War.-First World War:The...

 was formed on 26 December 1914. Its first commander was Douglas Haig promoted from command of the I Corps. When Haig took over command of the BEF in 1915, the new commander was General Henry Horne. First Army remained in France until the end of the war.

Second Army

The Second Army
British Second Army
The British Second Army was active during both the First and Second World Wars. During the First World War the army was active on the Western Front and in Italy...

 was formed at the same time as the First Army on 26 December 1914. The first commander was Smith–Dorrien promoted from command of the II Corps. In May 1915, Smith–Dorien was sacked and replaced by General Herbert Plumer
Herbert Plumer, 1st Viscount Plumer
Field Marshal Herbert Charles Onslow Plumer, 1st Viscount Plumer, GCB, GCMG, GCVO, GBE was a British colonial official and soldier born in Torquay who commanded the British Second Army in World War I and later served as High Commissioner of the British Mandate for Palestine.-Military...

. Second Army served in France notably in the Ypres Salient
Ypres Salient
The Ypres Salient is the area around Ypres in Belgium which was the scene of some of the biggest battles in World War I.In military terms, a salient is a battlefield feature that projects into enemy territory. Therefore, the salient is surrounded by the enemy on three sides, making the troops...

, and later served in Italy between November 1917 and March 1918, then returned to France.

Third Army

The Third Army
British Third Army
-First World War :The Third Army was part of the British Army during World War I and was formed in France on 13 July 1915. The battles it took part in on the Western Front included:*Battle of the Somme*Battle of Cambrai*Second Battle of Arras...

 was formed in July 1915. The first commander being General Edmund Allenby promoted after commanding the Cavalry Corps and the V Corps
V Corps (United Kingdom)
V Corps was an army corps of the British Army in both the First and Second World War. It was first organised in February 1915 and fought through World War I on the Western front...

. He was replaced after the battle of Arras
Battle of Arras (1917)
The Battle of Arras was a British offensive during the First World War. From 9 April to 16 May 1917, British, Canadian, New Zealand, Newfoundland, and Australian troops attacked German trenches near the French city of Arras on the Western Front....

 in May 1917, by General Julian Byng.

Fourth Army

The Fourth Army
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 contribution to the Battle of the Somme.-History:The Fourth...

 was formed in February 1916, under the command of General Henry Rawlinson
Henry Rawlinson, 1st Baron Rawlinson
General Henry Seymour Rawlinson, 1st Baron Rawlinson, GCB, GCSI, GCVO, KCMG , known as Sir Henry Rawlinson, Bt between 1895 and 1919, was a British First World War general most famous for his roles in the Battle of the Somme of 1916 and the Battle of Amiens in 1918.-Military career:Rawlinson was...

. Confusingly when the Second Army was sent to Italy Fourth Army was renumbered the Second Army and reverted back to being called Fourth Army when the Second Army returned to France in March 1918.

Fifth Army

The Fifth or Reserve Army
British Fifth Army
The Fifth Army was a field army of the British Army during World War I and part of the British Expeditionary Force during the First World War.-History:...

 was formed in May 1916, under command of General Hubert Gough
Hubert Gough
General Sir Hubert de la Poer Gough GCB, GCMG, KCVO was a senior officer in the British Army, who commanded the British Fifth Army from 1916 to 1918 during the First World War.-Family background:...

. At first known as the Reserve Army, it was renamed the Fifth Army in October 1916. Fifth Army was destroyed during the German offensive in March 1918
Operation Michael
Operation Michael was a First World War German military operation that began the Spring Offensive on 21 March 1918. It was launched from the Hindenburg Line, in the vicinity of Saint-Quentin, France...

. It was reformed again in May 1918 under the command of General William Birdwood.

Area of operations

The British Army first engaged the German Army in the Battle of Mons
Battle of Mons
The Battle of Mons was the first major action of the British Expeditionary Force in the First World War. It was a subsidiary action of the Battle of the Frontiers, in which the Allies clashed with Germany on the French borders. At Mons, the British army attempted to hold the line of the...

 in August 1914, which was part of the greater Battle of the Frontiers
Battle of the Frontiers
The Battle of the Frontiers was a series of battles fought along the eastern frontier of France and in southern Belgium shortly after the outbreak of World War I. The battles represented a collision between the military strategies of the French Plan XVII and the German Schlieffen Plan...

. The massed rifle fire of the professional British soldiers inflicted heavy casualties on the Germans who attacked en masse over terrain devoid of cover. The British held up the German advance until the evening when, they began retiring to a second defensive line in the retreat from Mons
Great Retreat
The Great Retreat, also known as the Retreat from Mons, is the name given to the long, fighting retreat by Allied forces to the River Marne, on the Western Front early in World War I, after their holding action against the Imperial German Armies at the Battle of Mons on 23 August 1914...

 and the Battle of Le Cateau
Battle of Le Cateau
The Battle of Le Cateau was fought on 26 August 1914, after the British, French and Belgians retreated from the Battle of Mons and had set up defensive positions in a fighting withdrawal against the German advance at Le Cateau-Cambrésis....

. The British victory at Le Cateau had achieved its objective, and enabled the BEF to retreat unmolested by the Germans for a further five days.

The Allied retreat finally ended at the River Marne where they prepared to make a stand to defend Paris. This led to the First Battle of the Marne
First Battle of the Marne
The Battle of the Marne was a First World War battle fought between 5 and 12 September 1914. It resulted in an Allied victory against the German Army under Chief of Staff Helmuth von Moltke the Younger. The battle effectively ended the month long German offensive that opened the war and had...

, which was fought from 5 to 10 September 1914. This battle would prove to be the major turning point of the war by denying the Germans an early victory. From the 13 September the First Battle of the Aisne
First Battle of the Aisne
The First Battle of the Aisne was the Allied follow-up offensive against the right wing of the German First Army & Second Army as they retreated after the First Battle of the Marne earlier in September 1914...

 took place with both sides starting to dig trenches and then for a three week period following the development of trench warfare, both sides gave up frontal assaults and began trying to encircle each other's flank. This period is called the Race to the Sea
Race to the Sea
The Race to the Sea is a name given to the period early in the First World War when the two sides were still engaged in mobile warfare on the Western Front. With the German advance stalled at the First Battle of the Marne, the opponents continually attempted to outflank each other through...

 as the Germans aimed to turn the Allied left flank, and the Allies sought to turn the German right flank.
By the end of First Battle of Ypres
First Battle of Ypres
The First Battle of Ypres, also called the First Battle of Flanders , was a First World War battle fought for the strategic town of Ypres in western Belgium...

, both sides started to dig in and Trench Warfare
Trench warfare
Trench warfare is a form of occupied fighting lines, consisting largely of trenches, in which troops are largely immune to the enemy's small arms fire and are substantially sheltered from artillery...

 took over from the manoeuvre warfare that had taken place during the Race to the sea
Race to the Sea
The Race to the Sea is a name given to the period early in the First World War when the two sides were still engaged in mobile warfare on the Western Front. With the German advance stalled at the First Battle of the Marne, the opponents continually attempted to outflank each other through...

. The continuous trench lines of the Western Front now stretched 400 miles (643.7 km) from the North sea
North Sea
In the southwest, beyond the Straits of Dover, the North Sea becomes the English Channel connecting to the Atlantic Ocean. In the east, it connects to the Baltic Sea via the Skagerrak and Kattegat, narrow straits that separate Denmark from Norway and Sweden respectively...

 to the Alps. The British Army held a small portion of this 400 mile front from just north of the pre war Belgium border to the River Somme in France, varying in length from 20 miles (32.2 km) in 1914, to over 120 miles (193.1 km) in 1918, in the area commonly known as Flanders
Flanders
Flanders is the community of the Flemings but also one of the institutions in Belgium, and a geographical region located in parts of present-day Belgium, France and the Netherlands. "Flanders" can also refer to the northern part of Belgium that contains Brussels, Bruges, Ghent and Antwerp...

.

1915

From the end of 1914, and in 1915, the BEF attacks were centred around the Ypres Salient
Ypres Salient
The Ypres Salient is the area around Ypres in Belgium which was the scene of some of the biggest battles in World War I.In military terms, a salient is a battlefield feature that projects into enemy territory. Therefore, the salient is surrounded by the enemy on three sides, making the troops...

. Then in September 1915, six divisions were involved in the Battle of Loos
Battle of Loos
The Battle of Loos was one of the major British offensives mounted on the Western Front in 1915 during World War I. It marked the first time the British used poison gas during the war, and is also famous for the fact that it witnessed the first large-scale use of 'new' or Kitchener's Army...

 which is also notable for the first use of Poison gas by the British.

1916

In 1916, the BEF had moved into the Picardy region of France and the year is dominated by the Battle of the Somme
Battle of the Somme (1916)
The Battle of the Somme , also known as the Somme Offensive, took place during the First World War between 1 July and 14 November 1916 in the Somme department of France, on both banks of the river of the same name...

. Allied forces attempted to break through the German lines along a 25 miles (40.2 km) front north and south of the River Somme in northern France. On the First day on the Somme
First day on the Somme
The first day on the Somme, 1 July 1916, was the opening day of the Battle of Albert, which was the first phase of the British and French offensive that became known as the Battle of the Somme...

 the BEF, suffered 59,000 casualties. After the war a final tally showed that 419,654 British and 204,253 French were killed, wounded, or taken prisoner; of the 623,907 total casualties, 146,431 were either killed or missing.

1917

In 1917, the BEF's attacks moved along the front, they were in the Pas-de-Calais for the Battle of Arras
Battle of Arras (1917)
The Battle of Arras was a British offensive during the First World War. From 9 April to 16 May 1917, British, Canadian, New Zealand, Newfoundland, and Australian troops attacked German trenches near the French city of Arras on the Western Front....

.
They then concentrated in Belgium for the Battle of Messines
Battle of Messines
The Battle of Messines was a battle of the Western front of the First World War. It began on 7 June 1917 when the British Second Army under the command of General Herbert Plumer launched an offensive near the village of Mesen in West Flanders, Belgium...

 and the Battle of Passchendale and ended the year back in the Pas-de-Calais for the Battle of Cambrai.

1918

In the spring of 1918, the BEF came under attack in both Flanders and the Somme during the German Spring Offensive
Spring Offensive
The 1918 Spring Offensive or Kaiserschlacht , also known as the Ludendorff Offensive, was a series of German attacks along the Western Front during World War I, beginning on 21 March 1918, which marked the deepest advances by either side since 1914...

. The Second Battle of the Somme
Second Battle of the Somme (1918)
During the First World War, the Second Battle of the Somme of 1918 was fought on the Western Front from the end of the summer, in the basin of the Somme River...

 was the BEF response to the German attack. This in turn was the start of the Hundred Days Offensive
Hundred Days Offensive
The Hundred Days Offensive was the final period of the First World War, during which the Allies launched a series of offensives against the Central Powers on the Western Front from 8 August to 11 November 1918, beginning with the Battle of Amiens. The offensive forced the German armies to retreat...

, which lead to the eventual defeat of the German Army on the western front, after the First and Third armies broke through the Hindenburg Line
Hindenburg Line
The Hindenburg Line was a vast system of defences in northeastern France during World War I. It was constructed by the Germans during the winter of 1916–17. The line stretched from Lens to beyond Verdun...

 at the Battle of the Canal du Nord
Battle of the Canal du Nord
The Battle of Canal du Nord was part of a general Allied offensive against German positions on the Western Front during the Hundred Days Offensive of World War I. The battle took place in the Nord-Pas-de-Calais region of France, along an incomplete portion of the Canal du Nord and on the outskirts...

.
Which lead to the final battle of the war in November 1918, the Battle of the Sambre
Battle of the Sambre (1918)
The Second Battle of the Sambre was part of the final European Allied offensives of World War I.-Background:...

 by the First, Third and Fourth Armies and the capture of Mons, 11 November 1918. by the First Army.

Empire and Portuguese contribution

The British Empire
British Empire
The British Empire comprised the dominions, colonies, protectorates, mandates and other territories ruled or administered by the United Kingdom. It originated with the overseas colonies and trading posts established by England in the late 16th and early 17th centuries. At its height, it was the...

 responded to the British call for troops for the Western Front
Western Front (World War I)
Following the outbreak of World War I in 1914, the German Army opened the Western Front by first 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...

 and major formations of the British Indian Army
British Indian Army
The British Indian Army, officially simply the Indian Army, was the principal army of the British Raj in India before the partition of India in 1947...

, Canadian Army, Australian Army
Australian Army
The Australian Army is Australia's military land force. It is part of the Australian Defence Force along with the Royal Australian Navy and the Royal Australian Air Force. While the Chief of Defence commands the Australian Defence Force , the Army is commanded by the Chief of Army...

, New Zealand Army
New Zealand Army
The New Zealand Army , is the land component of the New Zealand Defence Force and comprises around 4,500 Regular Force personnel, 2,000 Territorial Force personnel and 500 civilians. Formerly the New Zealand Military Forces, the current name was adopted around 1946...

 and the South African Army
South African Army
The South African Army is the army of South Africa, first formed after the Union of South Africa was created in 1910.The South African military evolved within the tradition of frontier warfare fought by commando forces, reinforced by the Afrikaners' historical distrust of large standing armies...

 all served in France. The BEF also integrated most of the Portuguese Army
Portuguese Army
The Portuguese Army is the ground branch of the Portuguese Armed Forces which, in co-operation with other branches of the Portuguese military, is charged with the defence of Portugal...

 troops who fought on the Western Front.

Indian Expeditionary Force A


In September 1914, the BEF was reinforced by the Indian Expeditionary Force A which eventually formed two corps each of two divisions, the Indian Cavalry Corps
Indian Cavalry Corps
The Indian Cavalry Corps was a formation of the British Indian Army in World War I. It was formed in France in December 1914. It remained in France until March 1916, when it was broken up....

 and the Indian Infantry Corps
I Corps (British India)
for the current Indian Army formation see I Corps The I Indian Corps was an army corps of the British Indian Army in World War I. It was formed at the outbreak of war under the title Indian Corps from troops sent to the Western Front. The British Indian Army did not have a pre-war corps structure,...

. Upon arrival in Marseilles on 30 September 1914, only six weeks after the declaration of war, they were moved to the Ypres Salient
Ypres Salient
The Ypres Salient is the area around Ypres in Belgium which was the scene of some of the biggest battles in World War I.In military terms, a salient is a battlefield feature that projects into enemy territory. Therefore, the salient is surrounded by the enemy on three sides, making the troops...

 and took part in the Battle of La Bassée
Battle of La Bassée
The Battle of La Bassée was a battle between British and German forces in northern France in October 1914, and was part of the Race to the Sea....

 in October 1914. In March 1915, the 7th (Meerut) Division
7th (Meerut) Division
The 7th Division was an infantry division of the British Indian Army that saw active service during World War I.-Pre-Mutiny:The Meerut Division first appeared in the Indian Army List in 1829, under the command of Sir Jasper Nicolls, KCB...

 was chosen to lead the assault in the Battle of Neuve Chapelle
Battle of Neuve Chapelle
The Battles of Neuve Chapelle and Artois was a battle in the First World War. It was a British offensive in the Artois region and broke through at Neuve-Chapelle but they were unable to exploit the advantage.The battle began on 10 March 1915...

. The Expeditionary Force was hampered by a lack of familiarity with new equipment, only being issued Lee Enfield rifles on their arrival in France and they had almost no artillery, relying on support from their neighbouring corps when in the front line. They were not accustomed to the continental weather and were poorly equipped to resist the cold, leading to low morale which was further compounded by the reserve system, whereby reinforcements were drafted in from any regiment and had no affiliation to their new units. Officer casualties were even more of a handicap, as replacements were unfamiliar with the Indian Army and could not speak the language. The infantry divisions were finally withdrawn to Egypt in October 1915, when they were replaced by the new British divisions of Kitchener's Army
Kitchener's Army
The New Army, often referred to as Kitchener's Army or, disparagingly, Kitchener's Mob, was an all-volunteer army formed in the United Kingdom following the outbreak of hostilities in the First World War...

.

South African Overseas Expeditionary Force

The South African Overseas Expeditionary Force
South African Overseas Expeditionary Force
The South African Overseas Expeditionary Force was a volunteer military organisation in World War I.-Organisation:The South African government formed the South African Overseas Expeditionary Force in July 1915, as its contribution to the British war effort against the Central Powers...

 consisted of the 1st South African Infantry Brigade of four infantry battalions supported by five Heavy Artillery batteries, a Field Ambulance, a Royal Engineers Signal Company and a General Hospital under the command of Brigadier General Henry Lukin
Henry Lukin
Major General Sir Henry Timson Lukin KCB, CMG, DSO was a South African military commander. He fought in the Anglo-Zulu War and the Basutoland Gun War , the Bechuanaland Campaign , and the Anglo-Boer War when he was in command of the artillery during the defence of Wepener for which action he was...

. The brigade arrived in France in April 1916, and was assigned to the 9th (Scottish) Division and took part in the Battle of the Somme
Battle of the Somme (1916)
The Battle of the Somme , also known as the Somme Offensive, took place during the First World War between 1 July and 14 November 1916 in the Somme department of France, on both banks of the river of the same name...

 in July 1916, and on 14 July the Battle of Delville Wood. Of the 3,153 men in the brigade only 750 where left when the brigade was relieved on 20 July. Later in 1917, the brigade took part in the Battle of Arras
Battle of Arras (1917)
The Battle of Arras was a British offensive during the First World War. From 9 April to 16 May 1917, British, Canadian, New Zealand, Newfoundland, and Australian troops attacked German trenches near the French city of Arras on the Western Front....

 and in the Third Battle of Ypres (Passchendaele). The brigade was destroyed in the 1918, German spring offensive and by the end of the war had suffered 15,000 casualties 5,000 being killed.

Canadian Expeditionary Force

The Canadian Expeditionary Force
Canadian Expeditionary Force
The Canadian Expeditionary Force was the designation of the field force created by Canada for service overseas in the First World War. Units of the C.E.F. were divided into field formation in France, where they were organized first into separate divisions and later joined together into a single...

 was the designation of the field force created by Canada for service overseas in the First World War. Its major combat formation was the Canadian Corps
Canadian Corps
The Canadian Corps was a World War I corps formed from the Canadian Expeditionary Force in September 1915 after the arrival of the 2nd Canadian Division in France. The corps was expanded by the addition of the 3rd Canadian Division in December 1915 and the 4th Canadian Division in August 1916...

, which eventually commanded four Canadian infantry divisions. The Canadian Corps first commander was General Edwin Alderson
Edwin Alderson
Lieutenant General Sir Edwin Alfred Hervey Alderson KCB was a senior British Army officer who served in several campaigns of the late nineteenth and early twentieth centuries...

, who was succeeded by General Julian Byng in 1916, who was in turn succeeded in 1917, by the Canadian General Arthur Currie
Arthur Currie
Sir Arthur William Currie GCMG, KCB , was a Canadian general during World War I. He had the unique distinction of starting his military career on the very bottom rung as a pre-war militia gunner before rising through the ranks to become the first Canadian commander of the four divisions of the...

 until the end of the war. After distinguishing themselves in battle from the Second Battle of Ypres
Second Battle of Ypres
The Second Battle of Ypres was the first time Germany used poison gas on a large scale on the Western Front in the First World War and the first time a former colonial force pushed back a major European power on European soil, which occurred in the battle of St...

, through the Somme and particularly in the Battle of Arras
Battle of Arras (1917)
The Battle of Arras was a British offensive during the First World War. From 9 April to 16 May 1917, British, Canadian, New Zealand, Newfoundland, and Australian troops attacked German trenches near the French city of Arras on the Western Front....

 at Vimy Ridge in April 1917. The Canadian Corps came to be regarded as an exceptional force by both Allied and German military commanders. Since they were mostly untouched by the German offensive in the spring of 1918, the Canadians were ordered to spearhead the last campaigns of the War from the Battle of Amiens in August 1918.

New Zealand Expeditionary Force

The New Zealand Expeditionary Force
New Zealand Expeditionary Force
The New Zealand Expeditionary Force was the title of the military forces sent from New Zealand to fight for Britain during World War I and World War II. Ultimately, the NZEF of World War I was known as the First New Zealand Expeditionary Force...

 (NZEF) under the command of General Alexander Godley
Alexander Godley
General Sir Alexander John Godley GCB, KCMG was a First World War general, best known for his role as commander of the New Zealand Expeditionary Force...

 was the title of the military forces sent from New Zealand to fight for Britain during World War I. Upon the outbreak of war, New Zealand immediately offered to provide two brigades — one of infantry and one of mounted troops — a total of 8,500 men. The NZEF was closely tied to the AIF for much of the war. When the Gallipoli campaign began, the New Zealand contingent was insufficient to complete a division on their own so was combined with the 4th Australian Infantry Brigade to form the New Zealand and Australian Division
New Zealand and Australian Division
The New Zealand and Australian Division was formed at the start of the Battle of Gallipoli as a composite division under the command of New Zealand general Alexander Godley. At the start of World War I New Zealand had mustered insufficient infantry battalions to form their own division while...

. This division, along with the Australian 1st Division
1st Division (Australia)
The 1st Division is the main formation of the Australian Army and contains the majority of the army's regular forces. Its headquarters is in Enoggera, a suburb of Brisbane...

, formed the famous Australian and New Zealand Army Corps
Australian and New Zealand Army Corps
The Australian and New Zealand Army Corps was a First World War army corps of the Mediterranean Expeditionary Force that was formed in Egypt in 1915 and operated during the Battle of Gallipoli. General William Birdwood commanded the corps, which comprised troops from the First Australian Imperial...

 (ANZAC) under the command of General William Birdwood. After the end of the Gallipoli campaign, the NZEF formed its own infantry division; the New Zealand Division
New Zealand Division
The New Zealand Division was a World War I infantry division formed in Egypt in January 1916 following the evacuation of Gallipoli. At the outbreak of war the New Zealand Expeditionary Force contained a single infantry brigade which was combined with the unattached Australian 4th Infantry Brigade...

 which served on the Western Front from April 1916. Taking part in the Battle of Flers-Courcelette
Battle of Flers-Courcelette
The Battle of Flers-Courcelette, was a battle within the Franco-British Somme Offensive which took place in the summer and autumn of 1916. Launched on the 15th of September 1916 the battle went on for one week. Flers-Courcelette began with the overall objective of cutting a hole in the German...

, the Battle of Morval
Battle of Morval
The Battle of Morval, which began on 25 September 1916, was an attack by the British Fourth Army on the German-held villages of Morval, Gueudecourt and Lesboeufs during the Battle of the Somme. These villages were originally objectives of the major British offensive of 15 September, the Battle of...

 and the Battle of Le Transloy
Battle of Le Transloy
The Battle of Le Transloy was the final offensive mounted by the British Fourth Army during the 1916 Battle of the Somme.-Prelude:With the successful conclusion of the preceding Battle of Morval at the end of September, the Fourth Army of Lieutenant General Henry Rawlinson had finally captured the...

.

Australian Imperial Force


The Australian Imperial Force
First Australian Imperial Force
The First Australian Imperial Force was the main expeditionary force of the Australian Army during World War I. It was formed from 15 August 1914, following Britain's declaration of war on Germany. Generally known at the time as the AIF, it is today referred to as the 1st AIF to distinguish from...

 (AIF) was originally supposed to supply 20,000 men organised into one infantry division and one light horse brigade plus supporting units. By the end of the war, the AIF on the Western Front comprised five infantry divisions.
The first Australians troops arrived in France in June 1915, the 1st Siege Artillery Brigade was formed under the command of Lieutenant Colonel Walter Adams Coxen
Walter Adams Coxen
Major General Walter Adams Coxen CB, CMG, DSO was an Australian Army Major General in World War I. In April 1930 Coxen was promoted to the position of Chief of General Staff. He retired in 1931.-Early life and career:...

, the Australian Army's Director of Artillery, for service on the Western Front. About half the men in the unit were permanent gunners of the Garrison Artillery. The brigade departed Melbourne for England on 17 July 1915 and landed in France on 27 February 1916. Its 54th Siege Battery
Australian 1st Siege Artillery Battery
1st Siege Artillery Battery was formed in Victoria during April 1915. The battery departed Melbourne on 17 July 1915 and served on the Western Front during World War I. The battery along with the 2nd Siege Artillery Battery made up the 1st Siege Artillery Brigade. 1st Siege Artillery Battery was...

 was equipped with 8 inch howitzers and its 55th Siege Battery
Australian 2nd Siege Artillery Battery
2nd Siege Artillery Battery was formed in Victoria during April 1915. The battery departed Melbourne on 17 July 1915 and served on the Western Front during World War I. The battery along with the 1st Siege Artillery Battery made up the 1st Siege Artillery Brigade. 2nd Siege Artillery Battery was...

 with 9.2 inch howitzers
BL 9.2 inch Howitzer
The Ordnance BL 9.2 inch howitzer was the principal counter-battery equipment of British forces in France in World War I. It equipped a substantial number of siege batteries of the Royal Garrison Artillery...

.
Five infantry divisions of the AIF saw action on the Western Front in France and Belgium, leaving Egypt in March 1916. Initially they were organised into I Anzac Corps
I Anzac Corps
The I ANZAC Corps was a combined Australian and New Zealand army corps that served during World War I.It was formed in Egypt in February 1916 as part of the reorganisation and expansion of the Australian Imperial Force and the New Zealand Expeditionary Force following the evacuation of Gallipoli...

 and II Anzac Corps
II Anzac Corps
The II ANZAC Corps was an Australian and New Zealand First World War army corps formed in Egypt in February 1916 as part of the reorganization of the Australian Imperial Force following the evacuation of Gallipoli in November 1915, under the command of William Birdwood...

 alongside the New Zealand Division
New Zealand Division
The New Zealand Division was a World War I infantry division formed in Egypt in January 1916 following the evacuation of Gallipoli. At the outbreak of war the New Zealand Expeditionary Force contained a single infantry brigade which was combined with the unattached Australian 4th Infantry Brigade...

, however, on 1 November 1917 the Australian divisions were re-grouped together to form the Australian Corps
Australian Corps
The Australian Corps was a World War I army corps that contained all five Australian infantry divisions serving on the Western Front. It was the largest corps fielded by the British Empire army in France...

. The 2nd Division was the first to arrive in France, followed by the 1st Division
1st Division (Australia)
The 1st Division is the main formation of the Australian Army and contains the majority of the army's regular forces. Its headquarters is in Enoggera, a suburb of Brisbane...

, while the 4th and 5th left Egypt later in June 1916. The 3rd Division was the last to arrive, having been formed in Australia in March 1916, and moving to England for training in July 1916, before being sent to France in December 1916. In 1916, the Commander of the AIF was General William Birdwood and when he was promoted Australian General John Monash
John Monash
General Sir John Monash GCMG, KCB, VD was a civil engineer who became the Australian military commander in the First World War. He commanded the 13th Infantry Brigade before the War and then became commander of the 4th Brigade in Egypt shortly after the outbreak of the War with whom he took part...

 was given command.

Portuguese Expeditionary Corps

Following a British Government call for Portuguese troops, on 7 August 1916 the Parliament of Portugal agreed the participation of the Portuguese Army on the Western Front. In addition to a heavy artillery corps of 1000 men under the command of the French Army
French Army
The French Army, officially the Armée de Terre , is the land-based and largest component of the French Armed Forces.As of 2010, the army employs 123,100 regulars, 18,350 part-time reservists and 7,700 Legionnaires. All soldiers are professionals, following the suspension of conscription, voted in...

, most of the Portuguese forces to be sent to the Western Front were to be incorporated in the CEP - Corpo Expedicionário Português (Portuguese Expeditionary Corps
Portuguese Expeditionary Corps
The Portuguese Expeditionary Corps was the main military force from Portugal that participated in the First World War. Portuguese neutrality ended in 1916 after the seizure of German merchant ships resulted in Germany declaring war...

) under British command. The CEP was organised as an army corps of two divisions and corps troops, totalling 55,000 men, under the command of General Tamagnini de Abreu. The first CEP troops arrived in France on 2 February 1917. The first troops reached the front on 4 April. On 4 June the 1st Infantry Brigade of the 1st Division repelled the first major attack made by the German Army against the lines defended by the CEP troops. On 5 November 1917 the CEP assumed the responsibility for an autonomous sector in the front, under the direct command of First Army. Most of the CEP was destroyed in the Battle of La Lys on 9 April 1918, losing more than 7000 men. From July 1918, the remaining men of the CEP participated in the final allied offensives under the command of Fifth Army.

Weapons


Until 1914, British infantry officers still carried swords and the cavalry retained the cavalry sword
1908 and 1912 Pattern British Army Cavalry Swords
The 1908 Pattern Cavalry Trooper's Sword was the last service sword issued to the cavalry of the British Army...

 throughout the war. The other officers' weapon was the pistol, the three most common being the Webley MK V or VI, the Colt New Service
Colt New Service
The Colt New Service was a double-action revolver made by Colt from 1898 until c.1940. It was adopted by the U.S. Armed Forces in .45 Colt as the Model 1909 U.S. Army, Marine Corps Model 1909, Model 1909 U.S. Navy and in .45 ACP as the Model 1917 U.S. Army...

 and the Smith & Wesson hand ejector

All other ranks
Other Ranks
Other Ranks in the British Army, Royal Marines and Royal Air Force are those personnel who are not commissioned officers. In the Royal Navy, these personnel are called ratings...

 in the BEF carried a .303 Lee Enfield rifle fitted with an easily loaded ten-round magazine and issued with a seventeen-inch (430 mm) Bayonet
Bayonet
A bayonet is a knife, dagger, sword, or spike-shaped weapon designed to fit in, on, over or underneath the muzzle of a rifle, musket or similar weapon, effectively turning the gun into a spear...

. These rifles enabled a high rate of fire with good accuracy, such that pre-war British soldiers were trained to hit a target fifteen times a minute at a range of 300 yards. The devastating firepower of the BEF infantry led the Germans to estimate that there were 28 machine guns in each battalion.

When the BEF landed in France each infantry battalion and cavalry regiment was equipped with two Vickers
Vickers machine gun
Not to be confused with the Vickers light machine gunThe Vickers machine gun or Vickers gun is a name primarily used to refer to the water-cooled .303 inch machine gun produced by Vickers Limited, originally for the British Army...

 or Maxim machine guns. Part of the reason for only allocating two guns per unit was the cost of manufacture and the need of a ten-week intensive training course for a Vickers gunner.

Campaign medals

As well as individual gallantry awards, all members of the BEF qualified for up to three campaign medals.
The 1914 Star
1914 Star
The 1914 Star was a British Empire campaign medal for service in World War I.The 1914 Star was approved in 1917, for issue to officers and men of British forces who served in France or Belgium between 5 August and midnight 22/23 November 1914...

, the 1914-15 Star
1914-15 Star
The 1914-15 Star was a campaign medal of the British Empire, for service in World War I.The 1914-15 Star was approved in 1918, for issue to officers and men of British and Imperial forces who served in any theatre of the War between 5 August 1914 and 31 December 1915 .Recipients of this medal also...

, the British War Medal
British War Medal
The British War Medal was a campaign medal of the British Empire, for service in World War I.The medal was approved in 1919, for issue to officers and men of British and Imperial forces who had rendered service between 5 August 1914 and 11 November 1918...

 and the Victory Medal
Victory Medal (United Kingdom)
The Victory Medal is a campaign medal - of which the basic design and ribbon was adopted by Belgium, Brazil, Cuba, Czechoslovakia, France, Greece, Italy, Portugal, Romania, Siam, Union of South Africa and the USA in accordance with decisions as taken at the Inter-Allied Peace Conference at...

.

The 1914 Star was issued to officers and men of British forces who served in France or Belgium between 5 August and midnight 22/23 November 1914. The former date is the day after Britain's declaration of war against the Central Powers, and the closing date marks the end of the First Battle of Ypres.

The 1914–1915 Star was issued to officers and men of British and Imperial forces who served in any theatre of the War between 5 August1914 and 31 December1915 (other than those who had already qualified for the 1914 Star).

The British War Medal was issued to officers and men of British and Imperial forces who had rendered service between 5 August 1914 and 11 November 1918. Officers and men of the Royal Navy, Royal Marines, and Dominion and Colonial naval forces (including reserves) were required to have completed 28 days mobilised service - the medal was automatically awarded in the event of death on active service before the completion of this period.

The Victory Medal was issued to all those who received the 1914 Star or the 1914–1915 Star, and to those who were awarded the British War Medal. It was never awarded singly. Women qualified for this and the earlier two medals, for service in nursing homes and other auxiliary forces.

The Territorial Force War Medal
Territorial Force War Medal
The Territorial Force War Medal was a campaign medal awarded to members of the British Territorial Force and Territorial Force Nursing Services who served overseas in World War I; it is the rarest of the five British Great War medals....

 was only awarded soldiers in the Territorial Force
Territorial Force
The Territorial Force was the volunteer reserve component of the British Army from 1908 to 1920, when it became the Territorial Army.-Origins:...

. To qualify, the recipient had to have been a member of the Territorial Force on or prior to 30 September 1914, and to have served in an operational theatre outside of the United Kingdom between 5 August 1914 and 11 November 1918.

The Silver War Badge was issued in the United Kingdom to service personnel who had been honourably discharged due to wounds or sickness during the War. The badge, sometimes known as the Discharge Badge, Wound Badge or Services Rendered Badge, was first issued in September 1916, along with an official certificate of entitlement.

Aftermath

The British Army during World War I was the largest military force that Britain had put into the field up to that point. On the Western Front, the BEF ended the war as the strongest fighting force, more experienced and bigger than the American Army and with better morale than the French Army.

The cost of victory was high. The official "final and corrected" casualty figures for the British Army, including the Territorial Force, were issued on 10 March 1921. The losses for the period between 4 August 1914, and 30 September 1919, included 573,507 "killed in action, died from wounds and died of other causes" and 254,176 missing (minus 154,308 released prisoners), for a net total of 673,375 dead and missing. Casualty figures also indicated that there were 1,643,469 wounded.
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