|Third Balkan War|
Course of the War
- Gavrilo Princip kills Archduke Ferdinand II of Austria.
- Austria-Hungary declares war on Serbia.
- The Ottoman Empire and Bulgaria join the war on the side of the Central Powers. Romania and join the Allies.
- Austria-Hungary captures Belgrade.
- Romania successfully stops a Bulgarian invasion through the Danube.
- Bulgaria defeats Romania at the Battle of Constanta.
- Ottoman forces arrive in Romania through Constanta.
- British forces land at Gallipoli.
- Austo-Hungarian forces defeat Serbia at the Battle of Kragujavec, forcing the Serbian government to move its capital again, this time to Nis.
- Ottoman and Bulgarian forces cross the Danube River in Romania in the hopes of conquering Bucharest.
- British forces leave Gallipoli.
- Serbia wins the Battle of Aleksinac, and begins to counterattack against the Austro-Hungarian invasion.
- Albania declares war on Austria-Hungary.
- Serbia begins a westward campaign, along with Albania, into Bosnia, hoping to take Sarajevo.
- France, Britain, and Russia all leave the war.
- Greece declares war on the Ottoman Empire and Bulgaria.
- Italy, technically still at war with the countries that declared war on Austria-Hungary, invades Albania, taking Vlora and Durres.
- Serbia and Albania abandon their Sarajevo campaign.
- Austria-Hungary, no longer at war with Russia, puts full focus on Serbia, and regains all ground it lost to Serbian counterattacks.
- Austria-Hungary invades Montenegro, which had been on the side of the allies but a small country.
- Romania loses the Battle of Urziceni, and calls for peace. Romania agrees to a peace treaty in which they give up some land east of the Danube, including the city of Constanta to Bulgaria.
- Greece agrees to a peace treaty in which Greece gives up some islands, including Crete, to the Ottoman Empire, and otherwise Greece returns to its borders before the Second Balkan War.
- Italy captures Tirana and Elbassan, and Albania surrenders, though some revolts continue
- Italy annexes Albania.
- Bulgaria invades Serbia, and soon takes control of Nis. As the government continues to move, Serbia attempts to negotiate peace with Bulgaria, but fails.
- Italy, hoping for even more land in the Balkans, invades Serbia from the West.
- Italy takes Skopje. Bulgaria takes Prishtina. Austria-Hungary takes Novi Pazar.
- Serbia surrenders, and Italy, Bulgaria, and Austria-Hungary divide it.