EOKA was headed by Georgios Grivas Greek Army officer, World War I and World War II veteran. During the Axis occupation of Greece in World War II, he led a small, anti-communist resistance group, named Organization X. During the anti-communist struggle of December 1944 in Athens after the Axis withdrawal he was saved due to British intervention. Grivas assumed the nom de guerre "Digenis" in direct reference to the legendary Byzantine Digenis Akritas who repelled invaders from the Byzantine Empire. Second in command in EOKA was Grigoris Afxentiou, also a former officer of the Greek army. Afxentiou had graduated from the reserves Officers Academy in 1950 without previous experience on battlefield.