Kammala jumla mai zuwa: Lokacin da Daular Rasha ta shiga Yaƙin Duniya na 1 a ranar 1 ga Agusta, 1914, Ragoza har yanzu yana cikin umurnin Rundunar Sojoji ta 19. A ranar 27 ga Satumba, 1914, Ragoza - a lokacin ya zama laftanan janar - ya zama kwamandan rundunar soji ta 25, wani bangare na rundunar soja ta 9. Ya jagoranci rundunar a cikin
Yaƙin Kogin Vistula a watan Satumba-Oktoba 1914. A ranar 6 ga Disamba, 1914, an daukaka shi zuwa janar na sojan sama. A matsayin shugaban rundunar soji ta 25, ya yi fice a lokacin yakin Vilkolaz da Urzhendov a karshen watan Yunin 1915, lokacin da wani hari da rundunar ta kai ya kayar da rundunar sojojin Austro-Hungary ta 4 karkashin jagorancin Archduke Joseph Ferdinand na Austria. Ya karɓi Dokar Saint Vladimir na Biyu na Biyu tare da Swords, Dokar White Eagle tare da Swords, da kuma Dokar St. George na Hudu na Hudu.