Pedzisa mutsara unotevera: Kukundwa kweSerbia kwaifungidzirwa kuva kwakanga kwava pedyo, zvichida navanoona vokunze, vachienzaniswa nesimba reAustria-Hungary. Serbia sezviri pachena yakanga yagadzirira zvakanaka, zvisinei, uye pashure pezvikwata zvehondo muna 1914-1915 (Hondo yeCer,
Hondo yeKolubara), kurasikirwa uye kutorazve Belgrade, uye kurwisa kweSerbia nekugara kwenzvimbo dzeAustria (muSirmia nekumabvazuva kweBosnia), uto reAustria rakadzokera kumashure. Musi wa5 July 1914, zvinhu zvakachinja sezvo Mambo Peter I akarega mabasa ake achienda kumudyi wenhaka Alexander, achimuita mutongi wake.