Georgios Grivas, also known by his nickname Digenis, was a Greek Cypriot officer of the Hellenic Army and founder and leader of the Greek and Greek Cypriot paramilitary organisations Organization X (1942–1949), EOKA (1955–1959) and EOKA B (1971–1974). He was also the Commander-in-Chief of the Armed Forces in Cyprus, then known as the Supreme Military Defence Command of Cyprus (ASDAK), which in the event of war would lead the Cyprus National Guard and the Hellenic Force in Cyprus (ELDYK).