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Hundred Days Offensive



 
 
The Hundred Days Offensive (Grand Offensive, Canada's Hundred Days) was the final period of World War I
World War I

World War I, or the First World War , was a global military conflict which involved the Great powers, organized into two opposing military alliances: the Allies of World War I and the Central Powers....
, where the Allies
Allies of World War I

File:Map Europe alliances 1914-en.svgThe Entente Powers were the countries at war with the Central Powers during World War I. The main allies were the Russian Empire, French Third Republic, the British Empire, Kingdom of Italy , the Empire of Japan, and the United States....
 launched a series of offensives against the Central Powers
Central Powers

The Central Powers was one of the two sides that participated in World War I, the other being the Allies of World War I....
 on the Western Front from 8 August 1918 to 11 November 1918, beginning with the Battle of Amiens
Battle of Amiens

The Battle of Amiens, which began on 8 August 1918, was the opening phase of the Allies of World War I offensive later known as the Hundred Days Offensive that ultimately led to the end of World War I....
. The offensive led to the final demoralisation and retreat of the German armies and the end of World War I
Armistice with Germany (Compiègne)

The armistice treaty between the Allies and German Empire was signed in a railway carriage in Compi?gne Forest on 11 November 1918, and marked the end of the World War I on the Western Front ....
. The Hundred Days Offensive does not refer to a specific battle or unified strategy, but rather the rapid sequences of Allied victories starting with the Battle of Amiens
Battle of Amiens

The Battle of Amiens, which began on 8 August 1918, was the opening phase of the Allies of World War I offensive later known as the Hundred Days Offensive that ultimately led to the end of World War I....
.

great German
Germany

Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium, and the Netherlands....
 offensives on the Western Front beginning with Operation Michael
Spring Offensive

The 1918 Spring Offensive or Kaiserschlacht and also known as the Ludendorff Offensive was a series of German attacks along the Western Front during World War I, which marked the deepest advances by either side since 1914....
 in March 1918 had petered out by July.






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The Hundred Days Offensive (Grand Offensive, Canada's Hundred Days) was the final period of World War I
World War I

World War I, or the First World War , was a global military conflict which involved the Great powers, organized into two opposing military alliances: the Allies of World War I and the Central Powers....
, where the Allies
Allies of World War I

File:Map Europe alliances 1914-en.svgThe Entente Powers were the countries at war with the Central Powers during World War I. The main allies were the Russian Empire, French Third Republic, the British Empire, Kingdom of Italy , the Empire of Japan, and the United States....
 launched a series of offensives against the Central Powers
Central Powers

The Central Powers was one of the two sides that participated in World War I, the other being the Allies of World War I....
 on the Western Front from 8 August 1918 to 11 November 1918, beginning with the Battle of Amiens
Battle of Amiens

The Battle of Amiens, which began on 8 August 1918, was the opening phase of the Allies of World War I offensive later known as the Hundred Days Offensive that ultimately led to the end of World War I....
. The offensive led to the final demoralisation and retreat of the German armies and the end of World War I
Armistice with Germany (Compiègne)

The armistice treaty between the Allies and German Empire was signed in a railway carriage in Compi?gne Forest on 11 November 1918, and marked the end of the World War I on the Western Front ....
. The Hundred Days Offensive does not refer to a specific battle or unified strategy, but rather the rapid sequences of Allied victories starting with the Battle of Amiens
Battle of Amiens

The Battle of Amiens, which began on 8 August 1918, was the opening phase of the Allies of World War I offensive later known as the Hundred Days Offensive that ultimately led to the end of World War I....
.

Background

The great German
Germany

Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium, and the Netherlands....
 offensives on the Western Front beginning with Operation Michael
Spring Offensive

The 1918 Spring Offensive or Kaiserschlacht and also known as the Ludendorff Offensive was a series of German attacks along the Western Front during World War I, which marked the deepest advances by either side since 1914....
 in March 1918 had petered out by July. The Germans had advanced to the Marne River
Marne River

The Marne is a river in France, a right tributary of the Seine in the area east and southeast of Paris. It is long. The river gave its name to the d?partement in France of Haute-Marne, Marne, Seine-et-Marne, and Val-de-Marne....
 but failed to achieve a decisive breakthrough. When Operation Marne-Rheims ended in July, the Allied supreme commander, the French
France

France , officially the French Republic , is a country whose Metropolitan France is located in Western Europe and that also comprises various Overseas departments and territories of France....
 Marshal
Marshal of France

The Marshal of France is a military distinction in contemporary France, not a military rank. It is granted to generals for exceptional achievements....
 Ferdinand Foch
Ferdinand Foch

Ferdinand Foch . Order of Merit List of honorary British knights was a France soldier, military theorist, and writer credited with possessing "the most original and subtle mind in the French Army" in the early 20th century....
, ordered a counter-offensive which became the 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 offensive on the Western Front . It failed when an Allied counterattack led by French forces overwhelmed the Germans, inflicting severe casualties....
. The Germans, recognising their untenable position, withdrew from the Marne towards the north.

Foch considered the time had arrived for the Allies to return to the offensive. The Americans
American Expeditionary Force

The American Expeditionary warfare or AEF was the United States Armed Forces force sent to Europe in World War I.The AEF fought alongside allied forces against German Empire forces....
 were now present in France in large numbers, and their presence invigorated the French armies. Their commander, General John Pershing was keen to use his army in an independent role. The British Army had also been reinforced by large numbers of troops returned from campaigns in Palestine
Sinai and Palestine Campaign

The Sinai and Palestine Campaign during the Middle Eastern Theatre of World War I was a series of battles which took place on the Sinai Peninsula, Palestine, and Syria between January 28, 1915 and October 28, 1918....
 and Italy
Italian Campaign (World War I)

The Italian campaign refers to a series of battles fought between the armies of Austria-Hungary and Kingdom of Italy , along with their allies, in northern Italy between 1915 and 1918....
, and large numbers of replacements previously held back in Britain by Prime Minister David Lloyd George
David Lloyd George

David Lloyd George, 1st Earl Lloyd-George of Dwyfor Order of Merit , Privy Council of the United Kingdom was a United Kingdom statesman and the only Wales Prime Minister of the United Kingdom - he is also the only one to have spoken English language as a second language, Welsh language having been his first....
.

Foch agreed on a proposal by Field Marshal Douglas Haig
Douglas Haig, 1st Earl Haig

Field Marshal Douglas Haig, 1st Earl Haig, Order of the Thistle, Order of the Bath, Order of Merit, Royal Victorian Order, Order of the Indian Empire, Aide de Camp was a United Kingdom soldier and senior commander during World War I....
, the commander of the British Expeditionary Force (BEF), to strike on the Somme
Somme River

The Somme is a river in Picardy, northern France. The name Somme comes from a Celtic languages word meaning tranquility. The department Somme was named after this river....
, east of Amiens
Amiens

Amiens is a city and Communes of France in northern France, north of Paris. It is the capital of the Somme Departments of France in Picardie....
 and southwest of the 1916 battlefield of the Battle of the Somme
Battle of the Somme (1916)

The Battle of the Somme, also known as the Somme Offensive, fought from July to November 1916, was among the largest List of World War I Battles of the World War I....
. The Somme was chosen as a suitable site for the offensive for several reasons. As in 1916, it marked the boundary between the BEF and the French armies, in this case defined by the Amiens-Roye road, allowing the two armies to cooperate. Also the Picardy
Picardy

This article is about the historical French province. For other uses, see Picardy .Picardy is a historical province of France, in the north of France....
 countryside provided a good surface for tank
Tank

A tank is a Continuous track, armoured fighting vehicle designed for front-line combat which combines operational mobility and Military tactics Offensive and defence capabilities....
s, which was not the case in Flanders
Flanders

Flanders is a geographical region located in parts of present-day Belgium, France, and the Netherlands. Over the course of history, the geographical territory that was called "Flanders" has varied....
. Finally, the German defences, manned by the German Second Army
German Second Army

The 2nd Army was a World War I and World War II field army....
 of General Georg von der Marwitz
Georg von der Marwitz

Johannes Georg von der Marwitz was a Kingdom of Prussia cavalry general, who commanded several Germany German Army during the First World War on both the Eastern and Western fronts....
, were relatively weak, having been subjected to continual raiding by the Australia
Australia

Australia, officially the Commonwealth of Australia, is a country in the southern hemisphere comprising the Australia of the world's smallest continent, the major island of Tasmania, and numerous list of islands of Australia in the Indian Ocean and Pacific Oceans....
ns in a process termed Peaceful Penetration
Peaceful Penetration

Peaceful Penetration was an Australian tactic , which was a cross between trench raiding and patrolling. The aim was similar to trench raiding , with the additional purpose to occupy the enemy's outpost line ....
.

Battles


Amiens


The Battle of Amiens opened on 8 August 1918, with an attack by more than 10 Allied divisions — Australian, Canadian
Canada

Canada is a country occupying most of northern North America, extending from the Atlantic Ocean in the east to the Pacific Ocean in the west and northward into the Arctic Ocean....
, British and French forces — with more than 500 tanks. Through careful preparations, the Allies achieved complete surprise. The attack, spearheaded by the Australian Corps
Australian Corps

The Australian Corps was a World War I army corps that contained all five Australian infantry division s serving on the Western Front. It was the largest corps fielded by the British Empire army in France....
 and Canadian Corps
Canadian Corps

For other uses of Canadian Corps, see 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....
 of the British Fourth Army
British Fourth Army

The Fourth Army was a field army of the British Expeditionary Force during the World War I. The Fourth Army was formed on 5 February 1916 under the command of General Henry S....
, broke through the German lines, and tanks attacked German rear positions, sowing panic and confusion. By the end of the day, a gap 24 kilometres (15 mi) long had been created in the German line south of the Somme. The Allies had taken 17,000 prisoners and captured 330 guns. Total German losses were estimated to be 30,000 on 8 August, while the Allies had suffered about 6,500 killed, wounded and missing. The collapse in German morale led Erich Ludendorff
Erich Ludendorff

Erich Friedrich Wilhelm Ludendorff was a Imperial Germany Army Officer , victor of Battle of Li?ge, and, with Paul von Hindenburg, one of the victors of the battle of Battle of Tannenberg ....
 to dub it "the Black Day of the German Army".

The advance continued for three more days but without the spectacular results of 8 August, since the rapid advance outran the supporting artillery and ran short of supplies. During those three days, the Allies had managed to gain 19 kilometres (12 mi), but most of that had occurred on the first day, as a result of the Germans adding reinforcements. On 10 August, the Germans began to pull out of the salient that they had managed to occupy during Operation Michael in March, back towards the Hindenburg Line
Hindenburg Line

The Hindenburg Line was a vast system of defenses in northeastern France during World War I. It was constructed by the Germanys during the winter of 1916–17....
.

Somme


On 15 August 1918, Foch demanded that Haig continue the Amiens offensive, even though the attack was faltering as the troops outran their supplies and artillery, and German reserves were being moved to the sector. Haig refused, and instead he prepared to launch a fresh offensive by the British Third Army at Albert
Albert, Somme

Albert is a commune in France of the Somme Department in France in Picardy in northern France. Population: approx. 10,500 inhabitants.It is located about halfway between Amiens and Bapaume....
, which opened on 21 August.

The offensive was a success, pushing the German Second Army back over a front. Albert was captured in 22 August. On 26 August, the British First Army
British First Army

The First Army was a army of the British Army that existed during the First World War and Second World Wars....
 widened the attack by another . Bapaume
Bapaume

Bapaume is a Communes of France and the seat of a Cantons of France in the Pas-de-Calais Departments of France in the Nord-Pas-de-Calais region of France....
 fell on 29 August. As artillery and munitions were brought forward, the British Fourth Army also resumed its offensive, and the Australian Corps crossed the Somme River on the night of 31 August, breaking the German lines at Mont St Quentin
Battle of Mont St. Quentin

The Battle of Mont St. Quentin was a battle on the Western Front during World War I. As part of the Allies of World War I counteroffensives on the Western Front in the late summer of 1918, the Australian Corps crossed the Somme River on the night of August 31, and broke the German Empire lines at Mont St....
 and Péronne. The British Fourth Army's commander, General Henry Rawlinson
Henry Rawlinson, 1st Baron Rawlinson

General Henry Seymour Rawlinson, 1st Baron Rawlinson, Order of the Bath, Order of the Star of India, Royal Victorian Order, Order of St Michael and St George , known as Sir Henry Rawlinson, 2nd Baronet between 1895 and 1919, was a United Kingdom World War I general most famous for his roles in the Battle of the Somme of 1916 and the Ba...
, described the Australian advances of 31 August–4 September as the greatest military achievement of the war.

By 2 September, the Germans had been forced back close to the Hindenburg Line, from which they had launched their offensive in the spring.

Hindenburg Line


Foch now planned a great concentric attack on the German lines in France (the Grand Offensive), with the various axes of advance converging on Liege
Liège (city)

Li?ge is a major Walloon Region city and Municipalities in Belgium in Belgium located in the Provinces of Belgium of Li?ge , of which it is the administrative capital....
 in Belgium
Belgium

* A small German-speaking Community of Belgium exists in eastern Wallonia. Belgium's linguistic diversity and related political and cultural conflicts are reflected in the history of Belgium and a complex Communities and regions of Belgium....
.

The main German defences were anchored on the Hindenburg Line, a series of defensive fortifications stretching from Cerny on the Aisne River
Aisne River

The Aisne is a river in northeastern France, left tributary of the river Oise River. It gave its name to the French d?partement in France Aisne....
 to Arras
Arras

Arras is the capital of the Pas-de-Calais Departments of France in northern France. The historic centre of the Artois region, its local speech is characterized as a Picard language dialect....
. Before Foch's main offensive was launched, the remaining German salients west and east of the line were crushed at Havrincourt
Battle of Havrincourt

The Battle of Havrincourt was a World War I battle fought on September 12, 1918, involving the British Third Army against German Empire troops, including those of the 3rd and 10th Corps, in the town of Havrincourt, France....
 and St Mihiel
Battle of Saint-Mihiel

The Battle of Saint-Mihiel was a World War I battle fought between September 12 - 15, 1918, involving the American Expeditionary Force and 48,000 France troops under the command of U.S....
 on 12 September; and at Epehy
Battle of Epéhy

The Battle of ?pehy was a World War I battle fought on 18 September 1918, involving the British Fourth Army against German Empire outpost positions in front of the Hindenburg Line....
 and Canal du Nord
Battle of the Canal du Nord

The Battle of Canal du Nord was a military offensive of World War I by the British First Army and British Third Army against the German troops along the Western Front in the Nord-Pas-de-Calais region of France, from 27 September 1918 to 1 October 1918....
 on 18 September.

The first attack of Foch's Grand Offensive was launched on 26 September by the American Expeditionary Force
American Expeditionary Force

The American Expeditionary warfare or AEF was the United States Armed Forces force sent to Europe in World War I.The AEF fought alongside allied forces against German Empire forces....
 in the Meuse-Argonne Offensive
Meuse-Argonne Offensive

The Meuse-Argonne Offensive, also called the Battle of the Argonne Forest, was a part of the final Allied offensive of World War I that stretched along the entire western front and also involved troops from Britain, its dominion/commonwealth armies , Belgium and France in other major attacks in other sectors....
. Two days later, the Army Group under Albert I of Belgium
Albert I of Belgium

Albert I was the third King of the Belgians from 1909 until 1934....
 (the Belgian Army and the British Second Army
British Second Army

The British Second Army existed in both the First World War and Second World Wars....
 under General Herbert Plumer) launched an attack near Ypres
Ypres

Ypres , Ieper , or Ypern is a Belgium Municipalities in Belgium located in the Flemish Region Provinces of Belgium of West Flanders....
 in Flanders
Flanders

Flanders is a geographical region located in parts of present-day Belgium, France, and the Netherlands. Over the course of history, the geographical territory that was called "Flanders" has varied....
 (the Fifth Battle of Ypres
Fifth Battle of Ypres

The Fifth Battle of Ypres is the unofficial name used to identify a series of battles in northern France and southern Belgium from late September through October 1918....
). Both attacks made good progress initially but were then slowed by logistic problems, particularly in the American sector.

On 29 September, Haig launched the main attack on the Hindenburg Line (the Battle of St. Quentin Canal) by the British 4th Army. By 5 October, the British Fourth Army had broken through the entire depth of the Hindenburg defences. Rawlinson wrote, "Had the Boche [Germans] not shown marked signs of deterioration during the past month, I should never have contemplated attacking the Hindenburg line. Had it been defended by the Germans of two years ago, it would certainly have been impregnable…"

Meanwhile (on October 8), led by the Canadian Corps, the 1st and 3rd British armies broke through the Hindenburg Line at the Battle of Cambrai
Battle of Cambrai (1918)

The 1918 Battle of Cambrai, also referred to as The 2nd Battle of Cambrai, was an engagement fought between troops of the Canadian Corps, British British First Army and British Third Army Armies and German Empire forces....
.

This collapse forced the German High Command to accept that the war had to be ended. The evidence of failing German morale also convinced many Allied commanders and political leaders that the war could be ended in 1918. (Previously, all efforts had been concentrated on building up forces to mount a decisive attack in 1919.)

German retreat

Through October the German armies were forced back through the territory gained in 1914, but their retreat never turned into a rout. However, the Allies were pressing the Germans back towards the lateral railway line from Metz to Bruges (shown in the map at the head of this article), which had supplied their entire front in Northern France and Belgium for much of the war. As the Allied armies
Allies of World War I

File:Map Europe alliances 1914-en.svgThe Entente Powers were the countries at war with the Central Powers during World War I. The main allies were the Russian Empire, French Third Republic, the British Empire, Kingdom of Italy , the Empire of Japan, and the United States....
 reached this line, the Germans were forced to abandon increasingly large amounts of heavy equipment and supplies, further reducing their morale and capacity to resist.

Casualties remained heavy in all of the Allied fighting forces, as well as in the retreating German Army. Rearguard actions were fought at Ypres
Ypres

Ypres , Ieper , or Ypern is a Belgium Municipalities in Belgium located in the Flemish Region Provinces of Belgium of West Flanders....
, Kortrijk
Kortrijk

Kortrijk is a Belgium city and Municipalities in Belgium located in the Flemish Region Provinces of Belgium West Flanders. The wider municipality comprises the city of Kortrijk proper and the towns of Aalbeke, Bellegem, Bissegem, Heule, Kooigem, Marke , and Rollegem....
, Selle
Selle

The Selle is a river of Picardie, France. Rising at Catheux, just north of Cr?vec?ur-le-Grand, Oise, it flows passed Conty, Saleux, Salou?l and Pont-de-Metz before joining the Somme River at Amiens....
, Valenciennes
Valenciennes

Valenciennes is a Communes of France in the Nord Departments of France in northern France.It lies on the Scheldt river. Although the city and region had seen a steady decline between 1975 and 1990, it has since rebounded....
, 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.At the front German resistance was falling away, unprecedented numbers of prisoners were taken in the Battle of the Selle, and a new attack was quickly prepared....
 and Mons, with fighting continuing until the last minutes before the Armistice
Armistice with Germany (Compiègne)

The armistice treaty between the Allies and German Empire was signed in a railway carriage in Compi?gne Forest on 11 November 1918, and marked the end of the World War I on the Western Front ....
 took effect at 11:00 on 11 November 1918. One of the last soldiers to die was Canadian Private George Lawrence Price
George Lawrence Price

Private George Lawrence Price was a Canada soldier who is traditionally recognized as being the last Commonwealth soldier killed during the World War I....
, two minutes before the armistice took effect. The final soldier to die was American Henry Gunther, who died at 10:59 p.m., less than 60 seconds before the Armistice took effect.