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Assassination of Archduke Ferdinand
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Austra-Hungary demands Serbia arrest the leaders of the Black Hand
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Serbia appeals to Russia for help
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Austria-Hungary declares war on Serbia
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Germany declares war on Russia
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Germany declares war on France
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Moltke orders the Schlieffen Plan to proceed
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German troops enter Belgium
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Great Britain declares war on Germany
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Lord Kitchener calls for 100,000 men to join British Army
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Big Bertha used against Liege Forts
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Austro-Hungarian troops invade Serbia
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French troops enter Lorraine
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British Expeditionary Force arrives in France
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Battle of Mons begins
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French Army abandons Plan 17
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Battle of Tannenberg begins
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Battle of Heligoland
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War Propaganda Bureau Writers Conference
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Battle of the Marne begins
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French troops attack German Army at the River Aisne
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Battle of Albert
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Battle of Arras
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First German aircraft shot down by Allied plane
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Battle of Ypres
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Canadian troops arrive in Britain
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Turkey joins Central Pwers
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Anglo-Indian invasion of Mesopotamia
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Farman MF-11 carries out first night bombing raid
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Christmas Truce on the Western Front
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South African forces occupy Swakopmund
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Battle of Dogger Bank
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BEF attacks at Neuve Chapelle
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Allied naval attack on the Dardanelles
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Roland Garros uses deflector plates
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German gas attack at Ypres
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Allied landings at Gallipoli
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Sinking of the Lusitania
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Artois Offensive
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Italy declares war on Austria-Hungary
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Germany abandons Ypres offensive
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Asquith forms coalition government
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First Zeppelin raid on London
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Isonzo Offensive begins
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Suvla Bay Offensive at Gallipoli
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Grand Duke Nikolai sacked as Commander-in-Chief
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First tank demonstrated to British military leaders
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Anglo-French Offensive at Artois-Loos
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Allied troops land at Salonika
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Edith Cavell executed
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Sir Douglas Haig, new BEF commander
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Britain introduces conscription
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German Verdun Offensive
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Germany declares war on Portugal
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Battle of Jutland
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Russian Brusilov Offensive
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Lord Kitchener killed at sea
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Start of Anglo-French Somme Offensive
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Italian Gorizia Offensive
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Hindenburg becomes German Chief of Staff
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First use of British tanks at Flers-Courcelette
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French recapture Douaumont Fort at Verdun
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Somme Offensive ends
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Start of Nivelle Offensive
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French tanks used for the first time in battle
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British attack at Messines
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Italian Caproretto Offensive
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Wilson announces 14 Points Peace Programme
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3rd Battle of the Aisne begins
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Allied breakthrough at Albert
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Allied forces capture the Hindenburg Line
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Armistice
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Paris Peace Conference