On This Day

Romania declares war on Bulgaria

The Second Balkan War (29 June – 10 August 1913) was a conflict fought between the Kingdom of Bulgaria and its former Balkan League allies, Serbia and Greece, who were later joined by Romania and the...

The Second Balkan War (29 June – 10 August 1913) was a conflict fought between the Kingdom of Bulgaria and its former Balkan League allies, Serbia and Greece, who were later joined by Romania and the Ottoman Empire. The war began when Bulgaria, unhappy with the division of territory after the First Balkan War, launched attacks on Serbian and Greek forces, who repelled the offensive and pushed into Bulgarian territory. With most of Bulgaria’s army committed in the south, Romania intervened from the north. The Ottoman Empire also took advantage of the situation to recover territories lost the previous year.

As Bulgaria suffered military setbacks on multiple fronts and Romanian forces advanced towards its capital, Sofia, it requested an armistice.

Historical Significance

The Second Balkan War (29 June – 10 August 1913) was a conflict fought between the Kingdom of Bulgaria and its former Balkan League allies, Serbia and Greece, who were later joined by Romania and the Ottoman Empire.

Events Before

  1. First running of San Francisco's famed "Bay to Breakers" footrace (7.63 miles/12.3 km); Robert Vlught wins in 44:10

    First running of San Francisco's famed "Bay to Breakers" footrace (7.63 miles/12.3 km); Robert Vlught wins in 44:10

  2. Kim Philby is born

    Kim Philby, British intelligence officer and soviet double agent, known for british intelligence officer and soviet double agent, was born on 1912-01-01.

  3. Geophysicist and meteorologist Alfred Wegener presents his controversial theory of continental drift in a lecture to the

    Geophysicist and meteorologist Alfred Wegener presents his controversial theory of continental drift in a lecture to the Geological Association at the Senckenberg Museum in Frankfurt

  4. Chiefs, representatives of people's and church organizations, and other prominent individuals form the African National

    Chiefs, representatives of people's and church organizations, and other prominent individuals form the African National Congress and declare its aim to bring all Africans together as one people to defend their rights and freedoms

  5. Captain Robert Scott's expedition arrives at the South Pole, one month after Roald Amundsen

    The Amundsen–Scott South Pole Station is a United States scientific research station at the South Pole of the Earth.

Events After

  1. Kornelis "Klaas" ter Laan becomes the Netherlands' first socialist mayor in Zaandam

    Kornelis "Klaas" ter Laan becomes the Netherlands' first socialist mayor in Zaandam

  2. Danish "Out of Africa" author Karen Blixen (28), pen name Isak Dinesen marries her 2nd cousin Baron Hans von Blixen-Fine

    Danish "Out of Africa" author Karen Blixen (28), pen name Isak Dinesen marries her 2nd cousin Baron Hans von Blixen-Finecke

  3. "The Squaw Man," the first feature-length film shot in Hollywood, directed by Cecil B. DeMille and Oscar Apfel, is relea

    "The Squaw Man," the first feature-length film shot in Hollywood, directed by Cecil B. DeMille and Oscar Apfel, is released in the US

  4. First successful non-direct blood transfusion is performed by Dr. Albert Hustin in Brussels

    First successful non-direct blood transfusion is performed by Dr. Albert Hustin in Brussels

  5. Film serial "The Perils of Pauline" is shown for the first time in Los Angeles, California

    Film serial "The Perils of Pauline" is shown for the first time in Los Angeles, California

More from the 1910s

Frequently Asked Questions

What happened on July 10, 1913?
The Second Balkan War (29 June – 10 August 1913) was a conflict fought between the Kingdom of Bulgaria and its former Balkan League allies, Serbia and Greece, who were later joined by Romania and the Ottoman Empire. The war began when Bulgaria, unhappy with the division of territory after the First Balkan War, launched attacks on Serbian and Greek forces, who repelled the offensive and pushed into Bulgarian territory. With most of Bulgaria’s army committed in the south, Romania intervened from the north.
Why is Romania declares war on Bulgaria significant?
The Second Balkan War (29 June – 10 August 1913) was a conflict fought between the Kingdom of Bulgaria and its former Balkan League allies, Serbia and Greece, who were later joined by Romania and the Ottoman Empire.

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