Greco-Italian War
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 front stabilized in February 1941, by which time the Italians had reinforced the Albanian front to 28 divisions against the Greeks' 14 divisions. In March, the Italians conducted the unsuccessful spring offensive. At this point, losses were mutually costly, but the Greeks had far less ability than the Italians to replenish their losses in both men and material, and they were dangerously low on ammunition and other supplies. They also lacked the ability to rotate out their men and equipment, unlike the Italians. On the other side the Italian equipment proved to be of poor quality and of little use, while Italian morale remained low throughout the campaign.
Adolf Hitler decided that the increased British intervention in the conflict represented a threat to Germany's rear, while German build-up in the Balkans accelerated after Bulgaria joined the Axis on 1 March 1941. British ground forces began arriving in Greece the next day. This caused Hitler to come to the aid of his Axis ally. On 6 April, the Germans invaded northern Greece. The Greeks had deployed the vast majority of their men into a mutually costly stalemate with the Italians on the Albanian front, leaving the fortified Metaxas Line with only a third of its authorized strength. Greek and British forces in northern Greece were overwhelmed and the Germans advanced rapidly west and south. In Albania, the Greek army made a belated withdrawal to avoid being cut off by the Germans but was followed up by the Italians. Greece surrendered to German troops on 20 April 1941 and to the Italians on 23 April. Greece was subsequently occupied by Bulgarian, German and Italian troops. The Italian army suffered 102,064 combat casualties and fifty thousand wounded; the Greeks suffered over 83,500 combat casualties and 42,000 wounded.
Background
Italian imperialism
In the late 1920s, Italian Prime Minister Benito Mussolini said that Fascist Italy needed Spazio vitale, an outlet for its surplus population and that it would be in the best interests of other countries to aid in the expansion of Imperial Italy. The regime wanted hegemony in the Mediterranean–Danubian–Balkan region and Mussolini imagined the conquest "of an empire stretching from the Strait of Gibraltar to the Strait of Hormuz".There were designs for a protectorate over the Albanian Kingdom and for the annexation of Dalmatia and economic and military control of the Kingdom of Yugoslavia and the Kingdom of Greece. The fascist regime also sought to establish protectorates over the First Austrian Republic, the Kingdom of Hungary, the Kingdom of Romania and the Kingdom of Bulgaria, which lay on the periphery of an Italian European sphere of influence.
In 1935, Italy began the Second Italo-Ethiopian War to expand the empire; a more aggressive Italian foreign policy which "exposed vulnerabilities" of the British and French and created an opportunity the Fascist regime needed to realize its imperial goals. In 1936, the Spanish Civil War began and Italy made a military contribution so vast that it played a decisive role in the victory of the rebel forces of Francisco Franco. "A full-scale external war" was fought for Spanish subservience to the Italian Empire to place Italy on a war footing and to create "a warrior culture".
In September 1938, the Italian army had made plans to invade Albania, which began on 7 April 1939, and in three days had occupied most of the country. Albania was a territory that Italy could acquire for "living space to ease its overpopulation" as well as a foothold for expansion in the Balkans. Italy invaded France in June 1940, followed by their invasion of Egypt in September. A plan to invade Yugoslavia was drawn up, but postponed due to opposition from Nazi Germany and a lack of Italian army transport.
Greek–Italian relations in the interwar period
Italy had captured the predominantly Greek-inhabited Dodecanese Islands in the Aegean Sea from the Ottoman Empire in the Italo-Turkish War of 1912. It had occupied them since, after reneging on the 1919 Venizelos–Tittoni agreement to cede them to Greece. When the Italians found that Greece had been promised land in Anatolia at the Paris Peace Conference, 1919, for aid in the defeat of the Ottoman Empire during the First World War, the Italian delegation withdrew from the conference for several months. Italy occupied parts of Anatolia which threatened the Greek occupation zone and the city of Smyrna. Greek troops were landed and the Greco-Turkish War began with Greek troops advanced into Anatolia. Turkish forces eventually defeated the Greeks and with Italian aid, recovered the lost territory, including Smyrna. In 1923, Mussolini used the murder of an Italian general on the Greco-Albanian border as a pretext to bombard and temporarily occupy Corfu, the most important of the Ionian Islands.The Greek defeat in Anatolia and the signing of the Treaty of Lausanne ended the expansionist Megali Idea. Henceforth Greek foreign policy was largely aimed at preserving the status quo. Territorial claims to Northern Epirus, the Italian-ruled Dodecanese, and British-ruled Cyprus remained open but inactive in view of the country's weakness and isolation. The main threat Greece faced was from Bulgaria, which claimed Greece's northern territories. The years after 1923 were marked by almost complete diplomatic isolation and unresolved disputes with practically every neighbouring country. The dictatorship of Theodoros Pangalos in 1925–26 sought to revise the Treaty of Lausanne by a war with Turkey. To this end, Pangalos sought Italian diplomatic support, as Italy still had ambitions in Anatolia, but in the event, nothing came of his overtures to Mussolini. After the fall of Pangalos and the restoration of relative political stability in 1926, efforts were undertaken to normalize relations with Turkey, Yugoslavia, Albania and Romania, without much success at first. The same period saw Greece draw closer to Britain and away from France, exacerbated by a dispute over the two sides' financial claims from World War I.
The Greek government put renewed emphasis on improving relations with Italy and in November 1926, a trade agreement was signed between the two states. Initiated and energetically pursued by Andreas Michalakopoulos, the Italian–Greek rapprochement had a positive impact on Greek relations with Romania and Turkey and after 1928 was continued by the new government of Eleftherios Venizelos. This policy culminated with the signing of a treaty of friendship on 23 September 1928. Mussolini exploited this treaty, as it aided in his efforts to diplomatically isolate Yugoslavia from potential Balkan allies. An offer of alliance between the two countries was rebuffed by Venizelos but during the talks Mussolini personally offered "to guarantee Greek sovereignty" on Macedonia and assured Venizelos that in case of an external attack on Thessaloniki by Yugoslavia, Italy would join Greece.
During the late 1920s and early 1930s, Mussolini sought diplomatically to create "an Italian-dominated Balkan bloc that would link Turkey, Greece, Bulgaria, and Hungary". Venizelos countered the policy with diplomatic agreements among Greek neighbours and established an "annual Balkan conference ... to study questions of common interest, particularly of an economic nature, with the ultimate aim of establishing some kind of regional union". This increased diplomatic relations and by 1934 was resistant to "all forms of territorial revisionism". Venizelos adroitly maintained a principle of "open diplomacy" and was careful not to alienate traditional Greek patrons in Britain and France. The Greco-Italian friendship agreement ended Greek diplomatic isolation and led to a series of bilateral agreements, most notably the Greco-Turkish Friendship Convention in 1930. This process culminated in the signature of the Balkan Pact between Greece, Yugoslavia, Turkey and Romania, which was a counter to Bulgarian revisionism.
The Second Italo-Ethiopian War marked a renewal of Italian expansionism, and began a period where Greece increasingly sought a firm British commitment for its security. Although Britain offered guarantees to Greece for the duration of the Ethiopian crisis, it was unwilling to commit itself further so as to avoid limiting its freedom of manoeuvre vis-à-vis Italy. Furthermore, with the restoration of the Greek monarchy in 1935 in the person of the anglophile King George II, Britain had secured its dominant influence in the country. This did not change after the establishment of the dictatorial 4th of August Regime of Ioannis Metaxas in 1936. Although imitating the Fascist regime in Italy in its ideology and outward appearance, the regime lacked a mass popular base, and its main pillar was the King, who commanded the allegiance of the army. Greek foreign policy thus remained aligned with that of Britain, despite the parallel ever-growing economic penetration of the country by Nazi Germany. Metaxas himself, although an ardent Germanophile in World War I, followed this line, and after the Munich Conference in October 1938 suggested a British–Greek alliance to the British ambassador, arguing that Greece "should prepare for the eventuality of a war between Great Britain and Italy, which sooner or later Greece would find itself drawn into". Loath to be embroiled in a possible Greek–Bulgarian war, dismissive of Greece's military ability, and disliking the regime, the British rebuffed the offer.