Bulgaria's Involvement in World War I

Explore the key developments of World War I, such as Bulgaria's alignment with the Central Powers, the Macedonian Front stalemate, the breakthrough leading to Bulgaria's surrender, the Ottoman Empire's involvement and atrocities, Italy's entry into the war, the Eastern Front's Russian campaigns, and Romania's war effort culminating in the Treaty of Bucharest.

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Bulgaria's Alignment with the Central Powers and the Fall of Serbia

On October 14, 1915, Bulgaria entered World War I on the side of the Central Powers by declaring war on Serbia. This strategic alliance was pivotal in the Central Powers' campaign against Serbia, as Bulgaria's military strength significantly reinforced the Austro-Hungarian forces led by General August von Mackensen. With a combined force now totaling approximately 600,000 soldiers, the Central Powers swiftly overran Serbian defenses. Despite valiant efforts, including the Battle of Kosovo, the Serbian army was compelled to retreat through Albania, suffering great hardships. Montenegro also engaged in combat, notably at the Battle of Mojkovac, in an effort to delay the Central Powers and aid the Serbian withdrawal. Ultimately, the Serbian military was forced to evacuate to the Greek island of Corfu. Serbia was subsequently divided between the occupying forces of Austro-Hungary and Bulgaria, marking a temporary end to Serbian resistance.
Bulgarian soldiers in trenches with Adrian helmets observe the Macedonian front of the First World War, between barbed wire and a devastated landscape.

The Stalemate on the Macedonian Front and Allied Actions in Greece

The Macedonian Front, established following Bulgaria's entry into the war, was characterized by a prolonged stalemate. It was not until the Allies launched the Monastir Offensive in late 1916 that some territorial gains were made, including the recapture of Bitola by French and Serbian troops. Concurrently, the Allies sought to bolster their position by landing a Franco-British expeditionary force at Salonica (Thessaloniki) in Greece, with the intention of supporting Serbia and encouraging Greece to oppose the Central Powers. However, the political situation in Greece was complex; King Constantine I, who harbored sympathies for Germany, dismissed the pro-Allied Prime Minister Eleftherios Venizelos, leading to a national schism and complicating Allied efforts.

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1

Bulgaria's military support was crucial in the Central Powers' campaign, bolstering forces under General ______ von ______.

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August Mackensen

2

After fierce battles, the Serbian army retreated through ______, leading to their evacuation to the island of ______.

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Albania Corfu

3

Macedonian Front Stalemate Resolution

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Monastir Offensive by Allies in 1916 broke stalemate, recaptured Bitola.

4

Bulgaria's Role in WWI

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Bulgaria joined Central Powers, prompting establishment of Macedonian Front.

5

Greek National Schism Cause

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King Constantine I's dismissal of pro-Allied PM Venizelos led to national divide.

6

After the ______ army's severe loss at the ______, Allied forces quickly advanced into ______ territory, leading to an armistice on ______ 29, 1918.

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Bulgarian Battle of Dobro Pole Bulgarian September

7

Ottoman Empire's WWI fronts

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Caucasus, Middle Eastern regions, Suez Canal defense.

8

Ottoman Empire's WWI atrocities

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Armenian Genocide, ethnic cleansing of Greeks and Assyrians.

9

Allied campaigns against Ottomans

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Gallipoli Campaign failure, successful Mesopotamian Campaign, Baghdad captured in 1917.

10

Despite being part of the ______ Alliance, Italy chose ______ during the onset of World War I.

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Triple neutrality

11

The Italian army endured tough conditions in the ______ and ______ but secured a key win at the ______ of Vittorio Veneto.

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Alps Dolomites Battle

12

Italy's victory in ______ 1918 played a significant role in the collapse of the ______-Hungarian military and the cessation of hostilities on the Italian Front.

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October Austro

13

Initial Russian offensives in WWI

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Launched into Austrian Galicia and East Prussia; early Galicia victories raised hopes.

14

Significant defeats for Russia on the Eastern Front

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Battles of Tannenberg and Masurian Lakes led to strategic Russian withdrawal.

15

Impact of the Brusilov Offensive

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1916 high point for Russia, relieved Allied pressure but exposed Russian military limits.

16

In ______, Romania sided with the Allies, aiming to reclaim lands under Austro-Hungarian control.

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August 1916

17

After initial successes in ______, Romanian forces faced a strong response, resulting in the capture of their capital, ______.

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Transylvania Bucharest

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