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| 1911 | Balkan League Serbia Pasic, Nicola |  |
| The Balkan League is the Alliance of Serbia, Montenegro, Greece and Bulgaria against the Ottoman Empire during the Balkan Wars |
| 1912 | Alliance Serbia Pasic, Nicola | |
| Belgrade Greece, Serbia, Bulgaria & Montenegro form a Balkan League |
| 8th Oct The first state to declare war is Montenegro, starting the First Balkan War |
| !3 Mar A secret bilateral defensive Alliance is agreed between Serbia and Bulgaria |
| Dec Elle Following a ceasefire in December between the Ottoman Empire and Bulgaria, Serbia and Montenegro, the Turkish fleet twice exited the Dardanelles but was twice defeated in the battles of Elle and Lemnos |
| 1912 | Battle of Kumanovo Serbia Putnik, Radomir | |
| 24th Oct Kumanovo Defeats a Turkish covering force |
| 1912 | Battle of Lemnos Serbia Pasic, Nicola | |
| Dec Lemnos Following a ceasefire in December between the Ottoman Empire and Bulgaria, Serbia and Montenegro, the Turkish fleet twice exited the Dardanelles but was twice defeated in the battles of Elle and Lemnos |
| 1912 | Battle of Monastir Serbia Putnik, Radomir | |
| 5th Nov Monastir About 20,000 Turks are killed or captured |
| 5th Nov Monastir The remaining forces retreat to Yanina |
| Belgrade Leads three Serbian Armies into Macedonia |
| 1912 | Invasion of Turkey Serbia Pasic, Nicola | |
| Belgrade Members of the Balkan League attack Turkey & win quick victories |
| Serbia attacks south Skopje and Bitola |
| Macedonia Serbia & Bulgaria agree to partition Macedonia, still part of the Turkish Empire |
| Macedonia Serbia & Bulgaria agree to partition Macedonia |
| Varda Serbia and Bulgaria sign treaties to split the land of Vardar Macedonia |
| 1913 | Alliance Serbia Putnik, Radomir | |
| 1st June Belgrade An anti Bulgarian Serbian-Greek Alliance is signed |
| 22nd April Belgrade Assists Montenegro in capturing Scutari from the Turks |
| 1913 | Treaty of London Serbia Pasic, Nicola | |
| 17th May London The war ends with the treaty of London |
| 17th May London Under the treaty of London Albania is declared independent, Serbia, Montenegro and Greece are obliged to withdraw their forces |
