Constantine I (Greek: Κωνσταντίνος Αʹ, Konstantínos I; 2 August [O.S. 21 July] 1868 – 11 January 1923) was King of Greece from 18 March 1913 to 11 June 1917 and from 19 December 1920 to 27 September 1922. He was commander-in-chief of the Hellenic Army during the unsuccessful Greco-Turkish War of 1897 and led the Greek forces during the successful Balkan Wars of 1912–1913, in which Greece expanded to include Thessaloniki, doubling in area and population. He succeeded to the throne of Greece on 18 March 1913, following his father's assassination.
Constantine’s disagreement with Eleftherios Venizelos over whether Greece should enter World War I led to the National Schism. He forced Venizelos to resign twice, but in 1917 he left Greece, after threats by the Entente forces to bombard Athens; his second son, Alexander, became king. After Alexander's death, Venizelos' defeat in the 1920 legislative elections, and a plebiscite
in favor of his return, Constantine was reinstated. He abdicated the
throne for the second and last time in 1922, when Greece lost the Greco-Turkish War of 1919–1922, and this time was succeeded by his eldest son, George II. He died in exile four months later, in Sicily.
In 1912 with the formation of the Balkan League, Greece was ready for war against the Ottoman empire and Prince Constantine became Chief of the Hellenic Army.
Ottoman planning anticipated a two-prong Greek attack east and west of the impassable Pindus
mountain range. They accordingly allotted their resources, equally
divided, in a defensive posture to fortify the approaches to Ioannina, capital of Epirus,
and the mountain passes leading from Thessaly to Macedonia. This was a
grave error. The war plan by Venizelos and the Greek General Staff
called for a rapid advance with overwhelming force towards Thessaloniki
with its important harbor. A small Greek force of little more than a
division, just enough to forestall a possible Turkish redeployment
eastwards, was to be sent west as the "Army of Epirus".
At the same time the bulk of the Greek infantry and artillery
made a rapid advance against the Turks in the east. In the event, the
Greek plan worked well. Advancing on foot, the Greeks soundly defeated
the Turks twice, and were in Thessaloniki within 4 weeks. The Greek plan
for overwhelming attack and speedy advance hinged upon another factor:
should the Hellenic Navy
succeed in blockading the Turkish fleet within the Straits, any Turkish
reinforcements from Asia would have no way of quickly reaching Europe.
The Ottomans would be slow to mobilize, and even when the masses of
troops raised in Asia were ready, they were able to go no further than
the outskirts of Constantinople,
fighting the Bulgarians in brutal trench warfare. With the Bulgarians
directing the bulk of their force towards Constantinople, the capture of
Thessaloniki would ensure that the railway axis between these two main
cities was lost to the Turks, causing loss of logistics and supplies and
severe impairment of command and control capability. The Turks would be
hard placed to recruit locals, as their loyalties would be liable to
lie with the Balkan Allies. Ottoman armies in Europe would be quickly
cut off and their loss of morale and operational capability would lead
them toward a quick surrender.[citation needed]
Macedonian Front
Previously the Inspector General of the Army, Constantine was appointed commander-in-chief of the "Army of Thessaly" when the First Balkan War broke out in October 1912. He led the Army of Thessaly to victory at Sarantaporos. At this point, his first clash with Venizelos occurred, as Constantine desired to press north, towards Monastir,
where the bulk of the Ottoman army lay, and where the Greeks would
rendezvous their Serb allies. Venizelos, on the other hand, demanded
that the army capture the strategic port city of Thessaloniki, the capital of Macedonia,
with extreme haste, so as to prevent its fall to the Bulgarians. The
dispute resulted in a heated exchange of telegrams. Venizelos notified
Constantine that "... political considerations of the utmost importance
dictate that Thessaloniki be taken as soon as possible". After
Constantine impudently cabled: "The army will not march on Thessaloniki.
My duty calls me towards Monastir,
unless you forbid me", Venizelos was forced to pull rank. As Prime
Minister and War Minister, he outranked Constantine and his response was
famously three-words-long, a crisp military order to be obeyed
forthwith: "I forbid you". Constantine was left with no choice but to
turn east, and after defeating the Ottoman army at Giannitsa,
he accepted the surrender of the city of Thessaloniki and of its
Ottoman garrison on 27 October (O.S.), less than 24 hours before the
arrival of Bulgarian forces who hoped to capture the city first.
The capture of Thessaloniki against Constantine's whim proved a crucial achievement: the pacts of the Balkan League
had provided that in the forthcoming war against the Ottoman Empire,
the four Balkan allies would provisionally hold any ground they took
from the Turks, without contest from the other allies. Once an armistice
was declared, then facts on the ground would be the starting point of
negotiations for the final drawing of the new borders in a forthcoming
peace treaty. With the vital port firmly in Greek hands, all the other
allies could hope for was a customs-free dock in the harbor.[6]
Epirus Front
In the meantime, operations in the Epirus front had stalled: against the rough terrain and Ottoman fortifications at Bizani,
the small Greek force could not make any headway. With operations in
Macedonia complete, Constantine transferred the bulk of his forces to
Epirus, and assumed command. After lengthy preparations, the Greeks
broke through the Ottoman defences in the Battle of Bizani and captured Ioannina and most of Epirus up into what is today southern Albania (Northern Epirus). These victories dispelled the tarnish of the 1897 defeat, and raised Constantine to great popularity with the Greek people.
Accession to the Throne and Second Balkan War
George I was assassinated in Thessaloniki by an anarchist, Alexandros Schinas,
on 18 March 1913, and Constantine succeeded to the throne. In the
meantime, tensions between the Balkan allies grew, as Bulgaria claimed
Greek and Serbian-occupied territory. In May, Greece and Serbia
concluded a secret defensive pact aimed at Bulgaria. On 16 June, the
Bulgarian army attacked their erstwhile allies, but were soon halted.
King Constantine led the Greek Army in its counterattack in the battles
of Kilkis-Lahanas and the Kresna Gorge.
In the meantime the Bulgarian army had started to disintegrate: beset
by defeat in the hands of Greeks and Serbs, they were suddenly faced by a
Turkish counterattack with fresh Asian troops finally ready, while the Romanians advanced south, demanding Southern Dobrudja. Under attack on four fronts Bulgaria sued for peace, agreed to an armistice and entered into negotiations in Bucharest. On the initiative of Prime Minister Venizelos, Constantine was also awarded the rank and baton of a Field Marshal.
His popularity was at its peak. He was the "winner over the
Bulgarians", the King who under his military commandment, doubled the
Greek territory.
