Les événements
Assassination of Archduke Franz FerdinandThe Blank ChequeAustria declared war on SerbiaGermany declared war on RussiaGermany declared war on FranceGermany sent troops through BelgiumBritain Declared war on GermanyThe Schliefen plan was drawn upAirplanes started to be usedThe first use of GasTrenches had been dugGermans Invade Brussels capital of BelgiumTrench warfare BeginsPériodes
Battle of the MarneFirst Battle of YpresSecond battle of YpresBattle of VerdunBattle of the SommeThe third battle of Ypres/ The battle of Passchendaele
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