Dhameystir weedha soo socota: Dagaalkan, guuldaradii Serbia waxaa loo arkaa inay soo food saartay, ugu yaraan daawadayaasha dibedda, marka la barbar dhigo awoodda Austro-Hungary. Si kastaba ha ahaatee, Serbia si fiican ayey isu diyaarisay, kadibna dagaalkii 1914 (Dagaalkii Cer,
Dagaalkii Kolubara), luminta iyo dib u qabsashada Belgrade, iyo weerarkii lidka ku ahaa ee Serbia ee lagu qabsaday qaar ka mid ah dhulalka Austria ee ay ku nool yihiin dad aad u tiro badan oo reer Serbia ah (Syrmia iyo bariga Bosnia), ciidankii Austro-Hungarian-ka ayaa dib u noqday. Bishii Luulyo 5, 1914, waxyaabo badan ayaa isbeddelay markii Boqorkii da'da ahaa ee Peter I uu ka tanaasulay waajibaadkiisa dhaxal sugaha Alexander, isaga oo ka dhigaya taliyihiisa.