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World War I

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World War I, or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a global conflict between two coalitions: the Allies (or Entente) and the Central Powers. One of the deadliest conflicts in history, World War I caused 15 to 22 million deaths, including those resulting from war crimes and genocides. The war also contributed to the spread of the Spanish flu pandemic. The conflict saw important developments in weaponry, including machine guns, artillery, aircraft, chemical weapons, and tanks.

Text from the Wikipedia article World War I, CC BY-SA 4.0

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  1. 1914Assassination of Archduke Franz FerdinandLatin BridgeArchduke Franz Ferdinand of Austria, heir presumptive to the Austro-Hungarian throne, and his wife, Sophie, Duchess of Hohenberg, were assassinated by Bosnian Serb student Gavrilo Princip in Sarajevo on 28 June 1914. They were shot at close range while being driven through the provincial capital of Bosnia and Herzegovina, formally annexed by Austria-Hungary in 1908.
  2. 1914Battle of TannenbergOlsztynThe Battle of Tannenberg, also known as the Second Battle of Tannenberg, was fought between Russia and Germany between 26 and 30 August 1914, the first month of World War I. The battle resulted in the encirclement and the almost complete destruction of the Russian 2nd Army by the German 8th Army and the suicide of its commanding general, Alexander Samsonov.
  3. 1914Christmas truce—The Christmas truce was a series of widespread unofficial ceasefires mainly along the Western Front of the First World War around Christmas in 1914.
  4. 1914 – 1918Eastern FrontCentral EuropeThe Eastern Front, or Eastern Theater, of World War I  was a theater of operations that encompassed at its greatest extent the entire frontier between Russia and Romania on one side and Austria-Hungary, Bulgaria, the Ottoman Empire, and Germany on the other. It ranged from the Baltic Sea in the north to the Black Sea in the south, involved most of Eastern Europe, and stretched deep into Central Europe.
  5. 1914First Battle of the MarneAulnoisThe First Battle of the Marne or known in France as the Miracle on the Marne (French: miracle de la Marne) was a battle of the First World War fought from 5 to 12 September 1914. The German army invaded France with a plan for winning the war in 40 days by occupying Paris and destroying the French and British armies. The Germans had initial successes in August.
  6. 1914 – 1918Western FrontAlsace–LorraineThe Western Front was one of the main theatres of war during World War I. Following the outbreak of war in August 1914, the German Army opened the Western Front by invading Luxembourg and Belgium, then gaining military control of important industrial regions in France. The German advance was halted with the Battle of the Marne.
  7. 1914Battle of GaliciaLvivThe Battle of Galicia, also known as the Great Battle of Galicia, was a major battle between Russia and Austria-Hungary during the early stages of World War I in 1914. In the course of the battle, the Austro-Hungarian armies were severely defeated in several encounters and forced out of Galicia, while the Russians captured Lemberg (now Lviv) and, for approximately nine months, ruled Eastern Galicia until their…
  8. 1914Battle of LiègeLiègeThe Battle of Liège (5–16 August 1914) was the opening engagement of the German invasion of Belgium and the first battle of the First World War. The city of Liège was protected by a ring of modern fortresses, one of several fortified cities intended to delay an invasion for troops from the powers guaranteeing Belgian neutrality to mobilise and join the Belgian Army in the expulsion of the invader.
  9. 1914 – 1915Battle of SarikamishSarıkamışThe Battle of Sarikamish was an engagement between the Russian and Ottoman Empires during World War I. It took place from 22 December 1914, to 17 January 1915, as part of the Caucasus campaign.
  10. 1914Battle of the Falkland IslandsFalkland IslandsThe Battle of the Falkland Islands was a First World War naval action between the British Royal Navy and Imperial German Navy on 8 December 1914 in the South Atlantic. The British, after their defeat at the Battle of Coronel on 1 November, sent a large force to track down and destroy the German cruiser squadron. The battle is commemorated every year on 8 December in the Falkland Islands as a public holiday.
  11. 1914 – 1918Caucasus campaignArmenian HighlandsThe Caucasus campaign, also known as the Caucasus Front, comprised armed conflicts between the Russian Empire and the Ottoman Empire, later including Armenia, Azerbaijan, Georgia, the Mountainous Republic of the Northern Caucasus, the German Empire, the Central Caspian Dictatorship, and the British Empire, as part of the Middle Eastern theatre during World War I.
  12. 1914July CrisisEuropeThe July Crisis was a series of interrelated diplomatic and military escalations among the major powers of Europe in mid-1914, which led to the outbreak of World War I. It began on 28 June 1914 when the Bosnian Serb nationalist Gavrilo Princip assassinated Archduke Franz Ferdinand, heir presumptive to the Austro-Hungarian throne, and his wife Sophie, Duchess of Hohenberg.
  13. 1914 – 1918Middle Eastern theatre of World War ICentral AsiaThe Middle Eastern theatre of World War I saw action between 30 October 1914 and 30 October 1918. The combatants were, on one side, the Ottoman Empire (with the help of a great number of Kurdish tribes and Circassians, and the relative majority of Arabs), with some assistance from the other Central Powers; and on the other side, the British (with the help of a small number of Jews, Greeks, Armenians, some Kurdish…
  14. 1915 – 1923Armenian genocideOttoman EmpireThe Armenian genocide was the systematic destruction of the Armenian people and identity in the Ottoman Empire during World War I. Spearheaded by the ruling Committee of Union and Progress (CUP), it was implemented primarily through the mass murder of around one million Armenians during death marches from the Turkish-dominated Anatolia to the Syrian desert and the forced Islamization of others, primarily women and…
  15. 1915 – 1916Gallipoli campaignGallipoliThe Gallipoli campaign, the Dardanelles campaign, the Defence of Gallipoli or the Battle of Gallipoli (Turkish: Gelibolu Muharebesi, Çanakkale Muharebeleri or Çanakkale Savaşı) was a military campaign in the First World War on the Gallipoli Peninsula (now Gelibolu) from 19 February 1915 to 9 January 1916.
  16. 1915 – 1918Italian frontEastern AlpsThe Italian front (Italian: Fronte italiano; German: Südwestfront) was one of the main theatres of war of World War I. It involved a series of military engagements along the border between the Kingdom of Italy and Austria-Hungary from 1915 to 1918. The Kingdom of Italy entered the war on the Entente side, although they had previously been allied with Germany and Austria-Hungary in the Triple Alliance.
  17. 1915Second Battle of YpresYpresThe Second Battle of Ypres was fought from 22 April to 25 May 1915, during the First World War, for control of the tactically valuable high ground to the east and the south of the Flemish town of Ypres, in western Belgium. The First Battle of Ypres had been fought the previous autumn. The Second Battle of Ypres was the occasion of the first mass use by Germany of poison gas on the Western Front.
  18. 1916 – 1918Arab RevoltHejaz VilayetThe Arab Revolt (Arabic: الثورة العربية al-Thawra al-'Arabiyya), also known as the Great Arab Revolt (الثورة العربية الكبرى al-Thawra al-'Arabiyya al-Kubrā), was an armed uprising by the Hashemite-led Arabs of the Hejaz against the Ottoman Empire amidst the Middle Eastern theatre of World War I.
  19. 1916 – 1934Basmachi movementRussian TurkestanThe Basmachi movement (Russian: Басмачество, romanized: Basmachestvo, derived from Uzbek: Босмачи, romanized: Bosmachi, lit. 'bandits') was an uprising against Imperial Russian and Soviet rule in Central Asia. It has been called "probably the most important movement of opposition to Soviet rule in Central Asia".
  20. 1916Battle of JutlandNorth SeaThe Battle of Jutland (German: Skagerrakschlacht, lit. 'Battle of the Skagerrak') was a naval battle between Britain's Royal Navy Grand Fleet, under Admiral Sir John Jellicoe, and the Imperial German Navy's High Seas Fleet, under Vice-Admiral Reinhard Scheer, during the First World War.
  21. 1916Battle of the SommeRiver SommeThe Battle of the Somme (French: Bataille de la Somme; German: Schlacht an der Somme), also known as the Somme offensive, was a battle of the First World War fought by the armies of the British Empire and the French Republic against the German Empire. It took place between 1 July and 18 November 1916 on both sides of the upper reaches of the river Somme in France.
  22. 1916Battle of VerdunVerdunThe Battle of Verdun (French: Bataille de Verdun [bataj də vɛʁdœ̃]; German: Schlacht um Verdun [ʃlaxt ʔʊm ˈvɛɐ̯dœ̃]) was fought from 21 February to 18 December 1916 on the Western Front in France. The battle was the longest of the First World War and took place on the hills north of Verdun.
  23. 1916Sykes–Picot Agreement—The Sykes–Picot Agreement was a 1916 secret treaty between the United Kingdom and France, with assent from Russia and Italy, to define their mutually agreed spheres of influence and control in an eventual partition of the Ottoman Empire.
  24. 1916Brusilov offensiveGaliciaThe Brusilov offensive (Russian: Брусиловский прорыв, romanized: Brusilovskiĭ proryv, lit. 'Brusilov's breakthrough') of June to September 1916 was the Russian Empire's greatest feat of arms during World War I and among the most lethal offensives in world history.
  25. 1917Battle of CaporettoKobaridThe Battle of Caporetto (also known as the Twelfth Battle of the Isonzo, the Battle of Kobarid or the Battle of Karfreit) took place on the Isonzo front of World War I.
  26. 1917Battle of PasschendaelePassendaleThe Third Battle of Ypres (German: Dritte Flandernschlacht; French: Troisième Bataille des Flandres; Dutch: Derde Slag om Ieper), also known as the Battle of Passchendaele ( PASH-ən-dayl), was a campaign of the First World War, fought by the Allies against the German Empire.
  27. 1917Zimmermann telegram—The Zimmermann telegram (or Zimmermann note or Zimmermann cable) was a secret diplomatic communication issued from the German Foreign Office on January 17, 1917, that proposed a military contract between the German Empire and Mexico if the United States entered World War I against Germany. With Germany's aid, Mexico would recover Texas, Arizona, and New Mexico. The telegram was intercepted by British intelligence.
  28. 1917Battle of CambraiCambraiThe Battle of Cambrai (Battle of Cambrai, 1917, First Battle of Cambrai and Schlacht von Cambrai) was a British attack in the First World War, followed by the biggest German counter-attack against the British Expeditionary Force (BEF) since 1914.
  29. 1917 – 1921Ukrainian War of IndependenceUkraineThe Ukrainian War of Independence, also referred to as the Ukrainian–Soviet War in Ukraine, lasted from March 1917 to November 1921 and was part of the wider Russian Civil War. It saw the establishment and development of an independent Ukrainian republic, most of which was absorbed into the Ukrainian Soviet Socialist Republic between 1919 and 1920.
  30. 1918Armistice of 11 November 1918CompiègneThe Armistice of 11 November 1918 was the armistice that ended fighting on land, at sea, and in the air in World War I between the Entente and their last remaining opponent, Germany. It was signed in a railroad car in the Compiègne Forest, near the town of Compiègne. Previous armistices had been agreed with Bulgaria, the Ottoman Empire and Austria-Hungary.
  31. 1918Finnish Civil WarFinlandThe Finnish Civil War was fought in 1918 for the leadership and control of recently independent Finland (formerly part of Russia) between White Finland and the Finnish Socialist Workers' Republic (Red Finland). The clashes took place in the context of the national, political, and social turmoil caused by World War I (Eastern Front) in Europe.
  32. 1918Treaty of Brest-LitovskBrestThe Treaty of Brest-Litovsk was a separate peace treaty signed on 3 March 1918 between Russia and the Central Powers (Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria), by which Russia withdrew from World War I. The treaty, which followed months of negotiations after the armistice on the Eastern Front in December 1917, was signed at Brest-Litovsk (now Brest, Belarus).
  33. 1918German spring offensiveWest FlandersThe German spring offensive, also known as Kaiserschlacht ("Emperor's Battle") or the Ludendorff offensive, was a series of German attacks along the Western Front during the First World War, beginning on 21 March 1918.
  34. 1918Hundred Days OffensivePéronneThe Hundred Days Offensive (8 August to 11 November 1918) was a series of massive Allied offensives that ended the First World War. Beginning with the Battle of Amiens (8–12 August) on the Western Front, the Allies pushed the Imperial German Army back, undoing its gains from the German spring offensive (21 March – 18 July).
  35. 1919 – 1920Paris Peace ConferenceParisThe Paris Peace Conference was a set of formal and informal diplomatic meetings in 1919 and 1920 after the end of World War I, in which the victorious Allies set the peace terms for the defeated Central Powers.
  36. 1920Treaty of VersaillesHall of MirrorsThe Treaty of Versailles was a peace treaty signed on 28 June 1919. As the most important treaty of World War I, it ended the state of war between Germany and most of the Allied Powers. It was signed in the Palace of Versailles, exactly five years after the assassination of Archduke Franz Ferdinand, the proximate cause of the war. The other Central Powers on the German side signed separate treaties.