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Dovas was born in Konitsa, in the Janina Vilayet of the Ottoman Empire (present-day northwestern Greece). In 1918, Dovas graduated from the Greek Military Academy. During the Greek Civil War between the government and the communist Democratic Army of Greece, he was led the resistance of the Konitsa garrison during the Battle of Konitsa. Subsequently he rose from the rank of Lieutenant General (1954) to Chief of the Hellenic National Defense General Staff.
During his term of office, on 25 March 1955 an agreement between the Army and the CIA on the establishment of a special force entitled "Sheepskin" was made, which subsequently became the Greek component of Gladio, a secret organisation of NATO, CIA and the MI6.
After his retirement from the army, he was Chief of the Royal Household of King Paul of Greece.
From 20 September to 4 November 1961, Dovas was prime minister in a transitional government.
| Prime Minister of Greece
20 September – 4 November 1961
Lt. General Stylianos Kitrilakis
| Chief of the Hellenic National Defense General Staff
Lt General Athanasios Frontistis