Serbia

Details

Organization Timeline

Austria-Hungary annexes Bosnia and Herzegovina

📅 6 October 1908

The annexation of Bosnia and Herzegovina provoked protests in Serbia and Russia and intensified conflict over the Balkans. The crisis showed how imperial rule, nationalism, and great-power rivalry...

First Balkan War begins as Balkan states attack the Ottoman Empire

📅 8 October 1912

Montenegro’s declaration of war began a wider conflict involving Serbia, Bulgaria, and Greece against the Ottoman Empire. The Ottoman retreat reshaped borders and left unresolved rivalries. The wars...

Second Balkan War intensifies regional instability

📅 29 June 1913

Bulgaria attacked former allies over the division of Ottoman territories, triggering a second Balkan war. The settlement left grievances across the region and intensified strategic anxieties in...

Assassination in Sarajevo triggers the July Crisis

📅 28 June 1914

Archduke Franz Ferdinand and Sophie Chotek were assassinated by Gavrilo Princip, a Bosnian Serb nationalist. The killing became the trigger for a diplomatic crisis, but the wider war grew from...

Austria-Hungary sends Serbia an ultimatum

📅 23 July 1914

Vienna delivered a severe ultimatum to Serbia, including demands that Serbian officials permit Austro-Hungarian participation in the investigation. Serbia accepted most demands but not all....

Austria-Hungary declares war on Serbia

📅 28 July 1914

Austria-Hungary declared war after receiving Germany’s support. Mobilizations and declarations followed across Europe. The chain was not an automatic mechanical effect of alliances: political...