События
Assassination of ArchdukeThe 'Blank Cheque'Austria Declares War on SerbiaAustrians shelled BelgradeRussia began to Mobilise against AustriaGermany Declared War on RussiaFrance began to Mobilize against GermanyGermany declared War on FranceBritain declared War on GermanyJuly CrisisBattle of MonsRussians invaded GermanyStart of the Schlieffen PlanBelgian Resistance against GermanyDeadlock on the Western FrontPoison Gas first usedArtillary widely used on Western frontBattle of the SommeBattle of PasschendaeleBritish gave back PasschendaeleBattle of MarneThe battle of Heligoland
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