     constantine i (, konstantÃ­nos ÎÊ¹, vasilÃ©fs ton ellÃ­non;  â 11 january 1923) was king of greece from 1913 to 1917 and from 1920 to 1922. he was commander-in-chief of the hellenic army during the unsuccessful greco-turkish war of 1897 and led the greek forces during the successful balkan wars of 1912&ndash;1913, in which greece won thessaloniki and doubled in area and population. he succeeded to the throne of greece on 18 march 1913, following his father's assassination. his disagreement with eleftherios venizelos over whether greece should enter world war i led to the national schism. constantine forced venizelos to resign twice, but in 1917 he left greece, after threats of the entente forces to bombard athens; his second son, alexander, became king. after alexander's death, venizelos' defeat in the 1920 legislative elections, and a plebiscite in favor of his return, constantine was reinstated. he abdicated the throne for the second and
1868_births 1923_deaths Burials_at_Tatoi_Palace_Royal_Cemetery Commander\'s_Crosses_of_the_Cross_of_Valour_(Greece) Danish_princes Field_marshals_of_Greece Field_marshals_of_the_German_Empire Grand_Commanders_of_the_Order_of_the_Dannebrog Greek_exiles Greek_military_personnel_of_the_Balkan_Wars Greek_military_personnel_of_the_Greco-Turkish_War_(1897) Greek_people_of_World_War_I Greek_princes Heidelberg_University_alumni Honorary_Knights_Grand_Cross_of_the_Order_of_the_Bath House_of_GlA 1/4 cksburg_(Greece) Kings_of_Greece Knights_of_the_Golden_Fleece Knights_of_the_Order_of_the_Most_Holy_Annunciation Monarchs_who_abdicated Orthodox_monarchs People_from_Athens Presidents_of_the_Organising_Committees_for_the_Olympic_Games