Hellenic Army in the context of "Constantine I of Greece"

Strategos (pl.  strategoi), also known by its Latinized form strategus, is a Greek term meaning 'military general'. In the Hellenistic world and in the Byzantine Empire, the term also described a military governor. In the modern Hellenic Army, it is the highest officer rank.
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The Greco-Italian War, also called the Italo-Greek War, took place between Italy and Greece from 28 October 1940 to 23 April 1941. This conflict began the Balkans campaign of World War II between the Axis powers and the Allies, and eventually turned into the Battle of Greece with British and German involvement. On 10 June 1940, Italy declared war on France and the United Kingdom. By September 1940, the Italians had invaded France, British Somaliland and Egypt. This was followed by a hostile press campaign in Italy against Greece, accused of being a British ally. A number of provocations culminated in the sinking of the Greek light cruiser Elli by the Italians on 15 August. On 28 October, Mussolini issued an ultimatum to Greece demanding the cession of Greek territory, which the Prime Minister of Greece, Ioannis Metaxas, rejected.

Italy's invasion of Greece, launched with the divisions of the Royal Army based in Italian-controlled Albania, badly armed and poorly commanded, resulted in a setback: the Italian forces encountered unexpectedly tenacious resistance by the Hellenic Army and penetrated only a few kilometers into Greek territory and had to contend with the mountainous and muddy terrain on the Albanian–Greek border. With British air and material support, the Greeks stopped the Italian invasion just inside Greek territory by mid-November and subsequently counter-attacked with the bulk of their mobilized army to push the Italians back into Albania – an advance which culminated in the Capture of Klisura Pass in January 1941, a few dozen kilometers inside the Albanian border. The defeat of the Italian invasion and the Greek counter-offensive of 1940 have been called the "first Axis setback of the entire war" by Mark Mazower.

The Battle of Crete (German: Luftlandeschlacht um Kreta, Greek: Μάχη της Κρήτης), codenamed Operation Mercury (German: Unternehmen Merkur), was a major Axis airborne and amphibious operation during World War II to capture the island of Crete. It began on the morning of 20 May 1941, with multiple German airborne landings on Crete. Greek and other Allied forces, along with Cretan civilians, defended the island. After only one day of fighting, the Germans had suffered heavy casualties and the Allied troops were confident that they would defeat the invasion. The next day, through communication failures, Allied tactical hesitation, and German offensive operations, Maleme Airfield in western Crete fell, enabling the Germans to land reinforcements and overwhelm the defensive positions on the north of the island. Allied forces withdrew to the south coast. More than half were evacuated by the British Royal Navy and the remainder surrendered or joined the Cretan resistance. The defence of Crete evolved into a costly naval engagement; by the end of the campaign the Royal Navy's eastern Mediterranean strength had been reduced to only two battleships and three cruisers.

The Battle of Crete was the first occasion where Fallschirmjäger (German paratroops) were used en masse, the first mainly airborne invasion in military history and the first time the Allies made significant use of intelligence from decrypted German messages from the Enigma machine.

The Greek Civil War (Greek: Εμφύλιος Πόλεμος, romanized: Emfýlios Pólemos, lit. '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 war had its roots in divisions within Greece during World War II between the left-wing Communist-dominated resistance organisation, the EAM-ELAS, and loosely-allied anti-communist resistance forces. It later escalated into a major civil war between the Greek state and the Communists. The DSE was defeated by the Hellenic Army.

The Himara Revolt (Greek: Εξέγερση της Χειμάρρας), was a Greek uprising during the First Balkan War that took place in the region of Himara (Himarë, today southern Albania), on November 18 [O.S. November 5] 1912. It successfully overthrew the Ottoman forces of the region, thus securing the coastal area between Sarandë and Vlorë for the Hellenic Army.

The 3 September 1843 Revolution (Greek: Επανάσταση της 3ης Σεπτεμβρίου 1843; N.S. 15 September) was an uprising by the Hellenic Army in Athens, supported by large sections of the people, against the autocratic rule of King Otto. The rebels, led by veterans of the Greek War of Independence, demanded the granting of a constitution and the departure of the Bavarian officials that dominated the government. The revolution succeeded, ushering the period of constitutional monarchy (under the 1844 constitution) and universal suffrage in Greece.

The Hellenic Air Force (HAF; Greek: Πολεμική Αεροπορία, romanized: Polemikí Aeroporía, lit. 'Military Aviation', sometimes abbreviated as ΠΑ) is the air force of Greece (Hellenic being the endonym for Greek in the Greek language). It is considered to be one of the largest air forces in NATO, and is globally placed 18th out of 139 countries. Under the Kingdom of Greece from 1935 to 1973, it was previously known as the Royal Hellenic Air Force (RHAF) (Ἑλληνικὴ Βασιλικὴ Ἀεροπορία, Ellinikí Vasilikí Aeroporía).

The Hellenic Air Force is one of the three branches of the Hellenic Armed Forces, and its mission is to guard and protect Greek airspace, provide air assistance and support to the Hellenic Army and the Hellenic Navy, and to provide humanitarian aid in Greece and around the world. The Hellenic Air Force includes approximately 33,000 active troops, of whom 11,750 are career officers, 14,000 are professional soldiers (ΕΠ.ΟΠ.), 7,250 are volunteer conscripts, and 1,100 are women. The motto of the Hellenic Air Force is the ancient Greek phrase Αἰὲν Ὑψικρατεῖν (Aièn Hypsikrateîn, 'Always Dominate the Heights'), and the HAF emblem represents a flying eagle in front of the Hellenic Air Force roundel. The General Air Staff (GEA) is based at the Papagou Camp in the Municipality of Filothei - Psychiko of the Prefecture of Attica.