The Balkan Wars were a series of two conflicts that took place in the Balkan states in 1912 and 1913. In the First Balkan War, the four Balkan states of Greece, Serbia, Montenegro and Bulgaria declared war upon the Ottoman Empire and defeated it, in the process stripping the Ottomans of their European provinces, leaving only Eastern Thrace under the Ottoman Empire's control. In the Second Balkan War, Bulgaria fought against the other four original combatants of the first war. It also faced an attack from Romania from the north. The Ottoman Empire lost the bulk of its territory in Europe. Although not involved as a combatant, Austria-Hungary became relatively weaker as a much enlarged Serbia pushed for union of the South Slavic peoples. The war set the stage for the July crisis of 1914 and thus served as a prelude to the First World War.
The League of the Balkans was a quadruple alliance formed by a series of bilateral treaties concluded in 1912 between the Eastern Orthodox kingdoms of Greece, Bulgaria, Serbia and Montenegro, and directed against the Ottoman Empire, which at the time still controlled much of Southeastern Europe.
The Second Balkan War was a conflict that broke out when Bulgaria, dissatisfied with its share of the spoils of the First Balkan War, attacked its former allies, Serbia and Greece, on 16 (O.S.) / 29 (N.S.) June 1913. Serbian and Greek armies repulsed the Bulgarian offensive and counterattacked, entering Bulgaria. With Bulgaria also having previously engaged in territorial disputes with Romania and the bulk of Bulgarian forces engaged in the south, the prospect of an easy victory incited Romanian intervention against Bulgaria. The Ottoman Empire also took advantage of the situation to regain some lost territories from the previous war. When Romanian troops approached the capital Sofia, Bulgaria asked for an armistice, resulting in the Treaty of Bucharest, in which Bulgaria had to cede portions of its First Balkan War gains to Serbia, Greece and Romania. In the Treaty of Constantinople, it lost Adrianople to the Ottomans.
The Treaty of London or the Pact of London was a secret agreement concluded on 26 April 1915 by the United Kingdom, France, and Russia on the one part, and Italy on the other, in order to entice the latter to enter World War I on the side of the Triple Entente. The agreement involved promises of Italian territorial expansion against Austria-Hungary, the Ottoman Empire and in Africa where it was promised enlargement of its colonies. The Entente countries hoped to force the Central Powers – particularly Germany and Austria-Hungary – to divert some of their forces away from existing battlefields. The Entente also hoped that Romania and Bulgaria would be encouraged to join them after Italy did the same.
The Balkans and parts of this area may also be placed in Southeastern, Southern, Eastern Europe and Central Europe. The distinct identity and fragmentation of the Balkans owes much to its common and often turbulent history regarding centuries of Ottoman conquest and to its very mountainous geography.
The Entente, or the Allies, were an international military coalition of countries led by France, the United Kingdom, Russia, the United States, Italy, and Japan against the Central Powers of Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria in World War I (1914–1918).
The Balkans theatre or Balkan campaign was a theatre of World War I fought between the Central Powers and the Allies.
The Serbian campaign was a series of military expeditions launched in 1914 and 1915 by the Central Powers against the Kingdom of Serbia during the First World War.
The Macedonian front, also known as the Salonica front, was a military theatre of World War I formed as a result of an attempt by the Allied Powers to aid Serbia, in the autumn of 1915, against the combined attack of Germany, Austria-Hungary and Bulgaria. The expedition came too late and with insufficient force to prevent the fall of Serbia and was complicated by the internal political crisis in Greece. Eventually, a stable front was established, running from the Albanian Adriatic coast to the Struma River, pitting a multinational Allied force against the Bulgarian army, which was at various times bolstered with smaller units from the other Central Powers. The Macedonian front remained stable, despite local actions, until the Allied offensive in September 1918 resulted in Bulgaria capitulating and the liberation of Serbia.
The Kosovo offensive of 1915 was a World War I offensive launched as part of the Serbian campaign of 1915. It involved the Central Powers and the Kingdom of Serbia.
The Armistice of Salonica was the armistice signed at 10:50 p.m. on 29 September 1918 between Bulgaria and the Allied Powers at the General Headquarters of the Allied Army of the Orient in Thessaloniki. The armistice came into force at noon on 30 September 1918. The armistice would remain in effect until the conclusion of the Treaty of Neuilly-sur-Seine, the final general peace treaty, in November 1919.
The Kingdom of Bulgaria participated in World War I on the side of the Central Powers from 14 October 1915, when the country declared war on Serbia, until 30 September 1918, when the Armistice of Salonica came into effect.
The Bulgarian Second Army was a Bulgarian field army during the Balkan Wars, World War I, and World War II.
In World War I, Albania had been an independent state, having gained independence from the Ottoman Empire on 28 November 1912, during the First Balkan War. It was recognised by the Great Powers as the Principality of Albania, after Turkey officially renounced all its rights in May 1913. Being a fledgling new country, it quickly unravelled and just a few months after taking power, its German ruler, Prince Wilhelm, was forced to flee. After World War I broke out, anarchy took hold of the country as tribes and regions rebelled against central rule. To protect the Greek minority, Greek control was established in the southern districts replacing the Northern Epirote units beginning in October 1914. In response to this, Italy, although officially neutral at the time, also sent troops into the port of Vlorë, while Serbia and Montenegro took control of northern regions. In 1915 Serbia was overrun by combined German, Austro-Hungarian, and Bulgarian forces; the Serbian army retreated across the mountain passes of northern Albania, towards the Adriatic. Italian troops drove the Greeks from southern Albania and brought almost all Albanian territory under their control. Austrian forces invaded in June 1916; Austro-Hungarian forces remained in Albania until the end of the war when a multinational Allied force broke through and pushed them out in 1918.
The Battle of Krivolak was a World War I battle, fought between 21 October and 22 November 1915. It was fought in the initial stage of the Macedonian campaign, in the Balkans Theatre. On 21 October, Bulgarian troops attacked the French-held positions near the Strumica rail station, at the time part of the Kingdom of Serbia, starting the battle. Fighting continued until 22 November, when two Serbian divisions failed to capture Skopje, thus rendering the continuation of Entente offensive operations dangerous and forcing the French to evacuate their forces from the region.
The Great Retreat, also known in Serbian historiography as the Albanian Golgotha, refers to the retreat of the Royal Serbian Army through the mountains of Albania during the 1915–16 winter of World War I.
The Toplica Uprising was a mass uprising against Bulgarian occupation force that took place in Bulgarian occupied Serbia during the First World War. The rebels were motivated by grievances against the Bulgarian authorities for ordering conscription of local Serbs in the Bulgarian army, forced labour and the denationalization policy imposed on the indigenous population. The revolt was supported by Serbian guerrilla fighters known as Chetniks.
The Battle of Kosturino was a World War I battle fought between 6 and 12 December 1915. It was fought in the initial stage of the Macedonian campaign, in the Balkans Theatre. On 6 December, Bulgarian troops attacked the French and British-held trenches in Kosturino, at the time part of the Kingdom of Serbia. Though the early offensive was held in check, on 8 December, Bulgaria managed to infiltrate the Memesli ravine. Bulgaria then seized Crete Simonet, thus threatening to outflank the Allies. The Entente defeat at Kosturino led to the complete withdrawal of Allied forces from Serbia, thus enabling the Central Powers to build the Berlin to Constantinople rail line. In the meantime, the Allies concentrated on solidifying their defenses in Greece.
The Bulgarian occupation of Serbia of WW1 started in Autumn 1915 following the invasion of Serbia by the combined armies of Germany, Austria-Hungary and Bulgaria. After Serbia's defeat and the retreat of its forces across Albania, the country was divided into Bulgarian and Austro-Hungarian occupation zones.
The Serbian campaign of 1915 refers to a military campaign carried out by the Central Powers, primarily Germany, Austria-Hungary and Bulgaria, against the Kingdom of Serbia during World War I. The campaign took place from October to November 1915.
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