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The badly shelled main road to Bapaume.jpg

World War I (abbreviated WWI), also known as the First World War, the Great War and The War to End all Wars was a global military conflict that took place mostly in Europe between 1914 and 1918. The main combatants were the Allied Powers, led by France, the Russian Empire, the British Empire, Serbia, Belgium, and later Italy, Romania and the United States, who fought against the Central Powers: Austria-Hungary, the German Empire, Bulgaria, and the Ottoman Empire (present day Turkey).

Much of the fighting in World War I took place along the Western Front, within a system of opposing manned trenches and fortifications (separated by a " no man's land") running from the North Sea to the border of Switzerland. On the Eastern Front, the vast eastern plains and limited rail network prevented a trench warfare stalemate from developing, although the scale of the conflict was just as large. Hostilities also occurred on and under the sea and — for the first time — in the air. More than nine million soldiers died on the various battlefields, and millions more civilians perished.

The war caused the disintegration of four empires: the Austro-Hungarian, German, Ottoman, and Russian. Germany lost its overseas empire, and states such as Czechoslovakia and Yugoslavia were created, or recreated, as in the cases of Lithuania and Poland. This contributed to a decisive break with the world order that had emerged after the Napoleonic Wars, which was modified by the mid-19th century’s nationalistic revolutions. The results of World War I would also be important factors in the development of World War II just over two decades later.

Selected event

ArrasFrance.February1919.ws.jpg

The Battle of Arras was an offensive during World War I by forces of the British Empire between 9 April and 16 May 1917. British, Canadian, and Australian troops attacked German trenches near the French city of Arras.

At this stage of the war, the Western Front was a continuous line of trenches stretching from the Belgian coast to the Swiss border. With minor adjustments caused by the ebb and flow of asaults and counter-assaults, this corresponded roughly to the final line of confrontation in the last phase of the war of movement of 1914. From behind barbed wire and fortifications, about 100 German divisions faced about 150 French and British Empire divisions in seeming deadlock. In its simplest terms, the Allied objective from early 1915 onwards was to break through the German defences into the open ground beyond and engage the numerically inferior German army in open battle.

The Battle of Arras was planned in conjunction with the French High Command, who were planning a massive attack (the Nivelle Offensive) about eighty kilometres to the south. This had the stated aim of ending the war in forty-eight hours. At Arras, the British Empire's immediate objectives were more modest: (i) to draw German troops away from the ground chosen for the French attack and (ii) to take the German-held high ground that dominated the plain of Douai.

When the battle officially ended on 16 May, British Empire troops had made significant advances, but had been unable to achieve a major breakthrough at any point. New tactics had been battle-tested, particularly in the first phase, and had demonstrated that set-piece assaults against heavily fortified positions could be successful. This sector then reverted to the stalemate that typified most of the war on the Western Front.

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Selected equipment

Mauser m98.jpg

The Gewehr 98 was the standard German infantry rifle from 1898 to 1935, when the Karabiner 98k replaced it. The Gewehr 98, or G98, named for 1898, the first year of its manufacture, superseded the earlier Model 1888 Commission Rifle (also known as Gewehr 88 or Judenflinte) in German service. This should not be confused with a Mauser Model 1888. The G98 itself was the latest in a line of Mauser rifles that were introduced in the 1890s. It was a bolt-action rifle, 1.25 metres in length and 4.09 kilograms in weight. It carried 5 rounds of 7.92 x 57 mm Mauser ammunition in an internal box magazine.

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"It is easier to make war than make peace."
Georges Clemenceau, 20 July 1919

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Italian troops entrenched along the Isonzo river.

Photo credit: Unknown Italian government photographer. Scanned from a public domain text by The Great War Primary Documents Archive.

Selected biography

Hunter Liggett.jpg

Hunter Liggett (March 21, 1857– December 30, 1935) was a general of the United States Army. His forty-two years of service spanned the period from the Indian campaigns to trench warfare. Liggett was born in Reading, Pennsylvania. After his graduation from West Point as an infantry lieutenant in 1879, field service in the American West, the Spanish–American War, and the Philippine–American War honed his skills as a troop leader. Success in brigade commands in Texas and in the Philippines led to his selection as commander of the 41st Infantry Division in France in 1917. When his division was disestablished, he took command of I Corps. Under Liggett's leadership, the corps participated in the Second Battle of the Marne and in the reduction of the Saint-Mihiel Salient. In October 1918, as commander of the U.S. First Army, he directed the final phases of the Meuse-Argonne Offensive and the pursuit of German forces until the armistice. After commanding the U.S. Third Army also known as the Army of Occupation on the Rhine bridgeheads, Hunter Liggett retired in 1921.

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Did you know...?

  • ...that the Lake Tanganyika passenger ferry MV Liemba began its life as a German warship in World War I, spent eight years on the bottom of the lake, and later portrayed the Empress Luisa in the film The African Queen?

Major topics

Theatres Main events Specific articles Participants See also

Prelude:
Causes
Sarajevo assassination
July Ultimatum

Main theatres:
Western Front
Eastern Front
Italian Front
Middle Eastern Theatre
Balkan Theatre
Atlantic Theatre

Other theatres:
African Theatre
Pacific Theatre

General timeline:
WWI timeline

1914:
German invasion of Belgium
Battle of Liège
Battle of Tannenberg
Invasion of Serbia
First Battle of the Marne
First Battle of Arras
Battle of Sarikamish
Battle of the Vistula River
Battle of Łódź (1914)
1915:
Mesopotamian campaign
Gallipoli Campaign
Second Battle of the Masurian Lakes
Defense of Van (1915)
Great Retreat (Russian)
Italian Campaign
Conquest of Serbia
1916:
Erzurum Offensive
Battle of Verdun
Lake Naroch Offensive
Trebizond Campaign
Battle of the Somme
Battle of Jutland
Brusilov Offensive
Conquest of Romania
Great Arab Revolt
1917:
Capture of Baghdad
Second Battle of Arras
Battle of Passchendaele
Battle of Caporetto
Conquest of Palestine
1918:
German Spring Offensive
Battle of Sardarabad
Hundred Days Offensive
Meuse-Argonne Offensive
Armistice with Germany
Armistice with Ottoman Empire

Military engagements
Naval warfare
Air warfare
Cryptography
Poison gas
Railways
Technology
Trench warfare
Partition of Ottoman Empire

Civilian impact and atrocities:
Armenian Genocide
Assyrian genocide
Greek genocide

Aftermath:
Aftermath
Casualties
Treaty of Brest-Litovsk
Paris Peace Conference
Treaty of Versailles
Treaty of St. Germain
Treaty of Neuilly
Treaty of Trianon
Treaty of Sèvres
Treaty of Lausanne
League of Nations

Entente Powers
  Russian Empire
France French Third Republic
  British Empire
  » United Kingdom United Kingdom
  » Australia Australia
  » Canada Canada
  »   India
  » New Zealand New Zealand
  »   South Africa
Kingdom of Italy Italy
Kingdom of Romania Romania
  United States
Kingdom of Serbia Serbia
Portugal Portugal
Beiyang government Republic of China
Empire of Japan Japan
Belgium Belgium
  Montenegro
Greece Greece
Armenia Armenia
more…

Central Powers
German Empire German Empire
  Austria-Hungary
  Ottoman Empire
Kingdom of Bulgaria Bulgaria

A war to end all wars
Female roles
Literature
Total war
Spanish flu
Veterans

Contemporaneous conflicts:
Mexican Revolution (1910-20)
First Balkan War (1912-13)
Second Balkan War (1913)
Maritz Rebellion (1914-15)
Easter Rising (1916)
Pancho Villa Expedition (1916-17)
Russian Revolution (1917)
Russian Civil War (1917–21)
Finnish Civil War (1918)
North Russia Intervention (1918–19)
Greater Poland Uprising (1918–19)
Polish–Soviet War (1919-21)
Irish War of Independence also known as the Anglo-Irish War (1919–21)
Turkish War of Independence also known as the Greco-Turkish War (1919–22)
Irish Civil War (1922–23)

Things you can do

From the World War I task force of the Military history WikiProject:

Attention needed
...to referencing and citation  • ...to coverage and accuracy  • ...to structure  • ...to grammar  • ...to supporting materials 
Popular pages
Full list
Cleanup needed
Adriatic Campaign of World War IAtlantic U-boat campaign of World War IBalkans Campaign (World War I)Battle of Belleau WoodBattle of Gully RavineBattle of PozièresBattle of Sari BairEastern Front (World War I)Italian Front (World War I)Robert NivelleSerbian Campaign of World War ISouth-West Africa CampaignLanding at Suvla BayMax von Boehn (General)Johannes von EbenNaval operations in the Dardanelles CampaignNaval warfare in the Mediterranean during World War IScottish Women's Hospitals for Foreign Service
Requested articles
Bombardment of SamogneuxGötz von König deBlack Sea Campaign (World War I)Battle of the NeteBattle of MusallaBattle of Qasr-i-ShirinBattle of QomBattle of HamadanOccupation of TabrizAffair of Umm at TubalBattle of NamacurraMakombe rebellionAuguste Clément GérômeKonrad von HippelHermann von ZiegesarJosef Freiherr Roth von Limanowa-LapanówAdolf Freiherr von Rhemen zu BarenfelsHugo Martiny von MalastówBattle of KyurdamirArmy Detachment SchefferEgon Graf von SchmettowArmy Group Boroević (currently a redirect)Max Hofmann (general)
Expansion needed
Battle of BehobehoBattle of Cambrai (1918)Battle of CaporettoBattle of Courtrai (1918)Battle of DodomaBattle of DutumiBattle of KaheBattle of Kibata (1916)Battle of Kibata (1917)Battle of KidodiBattle of KilosaBattle of KimbarambaBattle of Krithia VineyardBattle of LukiguraBattle of the Lys (1918)Battle of NambanjeBattle of MahiwaBattle of MatamondoBattle of MlaliBattle of MorogoroBattle of MkalamoBattle of Mouquet FarmBattle of NarungombeBattle of NjinjoOccupation of German SamoaBattle of RumboSamarra offensiveBattle of Scimitar HillBattle of SharqatBattle of St. Quentin CanalBattle of UteteBattle of WamiDemilitarisationFirst Battle of Villers-BretonneuxSecond Battle of KrithiaSecond Battle of KutSecond Battle of the IsonzoThird Battle of KrithiaThird Battle of the IsonzoFifth Battle of the IsonzoSeventh Battle of the IsonzoNinth Battle of the IsonzoTenth Battle of the IsonzoOperation Marne-RheimsJoseph B. SanbornRobert Kosch deSecond attack on Anzac CoveBarue uprisingYser FrontEttore MambrettiUkrainian Sich Riflemen
Images needed
Battle of Robănești
Merging needed
Add an article here!
Citations needed
Hundred Days OffensiveAsian and Pacific theatre of World War I1st Canadian Tunnelling Company &bull Landing at Suvla BayBattle of Gully RavineBattle of KumkaleVictory Medal (Romania)Battle of Augustów (1914)Draft:Vilno-Dvinsk offensive
Translation needed
de:Schlacht in den Karpaten (Large battle in the Carpathians) • fr:Mémorial Interallié

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