Dee ihe na-aga n'ihu maka paragraf a - Kubiliūnas gụsịrị akwụkwọ na Realgymnasium na Riga wee gaa n'ihu agụmakwụkwọ ya na Vilnius Military School, gụsịrị akwụkwọ na Disemba 1914. N'oge Agha Ụwa Mbụ, o jere ozi n'Usoro Ndị Agha Alaeze Ukwu Russia n'Ebe Ọwụwa Anyanwụ Ụwa. E kenyere ya na 2nd Riga Battalion nke Latvian Riflemen. E nyere ya ọtụtụ iwu ndị Russia, gụnyere obe nke St. George na nkwalite ya na onye isi maka omume ya n'oge Agha Krismas
na 1916.