Greek Civil War: Fighting breaks out in Athens between the ELAS and government forces supported by the British Army.

The Greek Civil War took place from 1946 to 1949. The conflict, which erupted shortly after the end of World War II, consisted of a Communist-led uprising against the established government of the Kingdom of Greece. The rebels declared a people's republic, the Provisional Democratic Government of Greece, which was governed by the Communist Party of Greece (KKE) and its military branch, the Democratic Army of Greece (DSE). The rebels were supported by Albania and Yugoslavia. With the support of the United Kingdom and the United States, the Greek government forces ultimately prevailed.

The Dekemvriana refers to a series of clashes fought during World War II in Athens from 3 December 1944 to 11 January 1945. The conflict was the culmination of months of tension between the left-wing EAM, some parts of its military arm, the ELAS, stationed in Athens, the KKE and the OPLA from one side and from the other side, the Greek Government, some parts of the Hellenic Royal Army, the Hellenic Gendarmerie, the Cities Police, the Organization X, among others and also the British Army.

Athens is the capital and largest city of Greece. A significant coastal urban area in the Mediterranean, Athens is also the capital of the Attica region and is the southernmost capital on the European mainland. With its urban area's population numbering over 3.6 million, it is the eighth-largest urban area in the European Union (EU). The Municipality of Athens, which constitutes a small administrative unit of the entire urban area, had a population of 643,452 (2021) within its official limits, and a land area of 38.96 km² (15.04 sq mi).

The Greek People's Liberation Army was the military arm of the left-wing National Liberation Front (EAM) during the period of the Greek resistance until February 1945, when, following the Dekemvriana clashes and the Varkiza Agreement, it was disarmed and disbanded. ELAS was the largest and most significant of the military organizations of the Greek resistance.