In 1904 he became a lieutenant, followed by promotions to captain II class (1910) and I class (1911).[2] During the Balkan Wars of 1912–13 he served as a staff officer in the General Headquarters of the Crown Prince, and later King, Constantine I of Greece.[2][3] Pallis was promoted to major in 1913, lieutenant colonel in 1915, and colonel in 1917. In 1915–17 he was head of the Army Staff Service's 3rd Directorate, responsible for training and history.[2]
Due to his monarchist views, he was dismissed from the army in 1917–20, but after the electoral victory of the pro-monarchist United Opposition in November 1920, he was recalled to active service and appointed chief of staff to the Army of Asia Minor, under Lieutenant General Anastasios Papoulas. In 1921 he was promoted to major general. He remained in his post until Papoulas' dismissal on 23 May 1922, after which he too requested to be reassigned.[2][3] Following the Turkish offensive and the dismissal of Papoulas' successor Georgios Hatzianestis, Pallis was reinstated as chief of staff of the rapidly disintegrating Army of Asia Minor, under Lt. General Georgios Polymenakos, on 26 August.
He retired from service on 28 November 1923. In 1927, the Special Military Council decided his re-activation and promotion to lieutenant general, but Pallis declined and resumed his retirement.[2][3]
Upon the outbreak of the Greco-Italian War on 28 October 1940, Pallis was recalled to active service and placed Chief of the Field Army General Staff, a position he held until February 1941.
^Note: Greece officially adopted the Gregorian calendar on 16 February 1923 (which became 1 March). All dates prior to that, unless specifically denoted, are Old Style.
^ abcdefgh"Αντιστράτηγος ΠΑΛΛΗΣ ΚΩΝΣΤΑΝΤΙΝΟΣ του ΕΥΑΓΓΕΛΟΥ, ΑΜ 4280". Συνοπτική Ιστορία του Γενικού Επιτελείου Στρατού 1901–2001 [A Concise History of the Hellenic Army General Staff 1901–2001] (in Greek). Athens: Hellenic Army History Directorate. 2001. p. 158. ISBN960-7897-44-7.
^ abcde Μεγάλη Στρατιωτικὴ καὶ Ναυτικὴ Ἐγκυκλοπαιδεία. Tόμος Πέμπτος: Νάβα–Σαρακηνοί [Great Military and Naval Encyclopaedia. Volume V: Nave–Saracens] (in Greek). Athens: Ἔκδοσις Μεγάλης Στρατιωτικῆς καὶ Ναυτικῆς Ἐγκυκλοπαιδείας. 1930. p. 246. OCLC31255024.
§ Substitute Chiefs of the General Staff for the Rear Areas/Interior (as opposed to the Field Staff) † Deputy Chiefs substituting during vacancies ‡ Under the title "Chief of the Army"
