 Nyorai kuenderera kweiyi ndima - Akasimudzirwa kuva Kaputeni muna 1913 uye Major muna 1915, Sarigiannis akabatana neVenizelist Movement of National Defense, uye akashanda semukuru wevashandi veCrete Division kumberi kweMacedonia. Akakwidziridzwa kuva Lieutenant Colonel muna 1917, akasimudzirwa zvakare kuva Colonel muna 1919 mukucherechedza basa rakasiyana panguva yaMay 1918 Hondo yeSkra-di-Legen. 