[7] Meanwhile, disagreements between King Constantine I and Prime Minister Eleftherios Venizelos over whether Greece should enter World War I, lead to political instability and the National Schism (1914–1916).

Greece officially joined the Triple Entente at June 1917, however the anti-royalist party of the country under the leadership of Venizelos formed a Movement of National Defence that supported the Allied military operations in the region from December 1916.

Among the most significant missions were the night raids against the Gallipoli-Constantinople peninsula in June 1917, the heavy bombings of enemy positions in the Macedonian front, as well as İzmir, Ottoman Empire.

[8] Aristeidis Moraitinis, the commander of the Hellenic Naval Air Service, acquired the nickname the Fearless Aviator by his British colleagues and counted nine victories in total, becoming so Greece's only World War I ace.

[14] In one occasion, on 20 January 1918, Moraitinis, fought ten enemy aircraft which attacked two British Sopwith Baby seaplanes he was escorting on their way to bomb the Turkish battlecruiser Yavuz Sultan Selim (the former German SMS Goeben) and managed to shoot down three of them.

[16] This squadron (Greek: Ναυτική Αεροπορική Μοίρα Σμύρνης) initially consisted of 10 Airco DH.9 bombers and 15 Sopwith Camel F.1 fighters.

[17] The Asia Minor Campaign was followed by a long period of peace during which both the Hellenic Army and Naval Aviation Services were reorganized and upgraded.