Alexandros Papagos was a Greek army officer who led the Hellenic Army in World War II and the later stages of the subsequent Greek Civil War. The only Greek career officer to rise to the rank of Field Marshal, Papagos became the first Chief of the Hellenic National Defence General Staff from 1950 until his resignation the following year. He then entered politics, founding the nationalist Greek Rally party and becoming the country's Prime Minister after his victory in the 1952 elections. His premiership was shaped by the Cold War and the aftermath of the Greek Civil War, and was defined by several key events, including Greece becoming a member of NATO; U.S. military bases being allowed on Greek territory and the formation of a powerful and vehemently anti-communist security apparatus. Papagos' tenure also saw the start of the Greek economic miracle, and rising tensions with Britain and Turkey during the Cyprus Emergency over the Cyprus issue.

The Hellenic National Defence General Staff is the senior staff of the Hellenic Armed Forces. It was established in 1950, when the separate armed services ministries were consolidated into the Ministry of National Defence. Its role in peacetime was as a coordinating and senior consultative body at the disposal of the Greek government, and in wartime as the overall headquarters of the Armed Forces. In recent years, through ongoing efforts at increased inter-services cooperation and integration, the HNDGS has assumed peacetime operational control over the separate branches. Between 19 December 1968 and 10 August 1977, the HNDGS was abolished, and the Armed Forces Headquarters established in its place.