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| 1389 | Bayezid I the Thunderbolt |  |
| 27th June Kossovo After the assassination of his father, Murad I, has all the Serb prisoners executed |
| 27th June Kossovo Inflicts a crushing defeat on the Serbian army after the assassination of Murad I |
| 1389 | Murad I |  |
| 27th June Kossovo Murad I gives the Prince of Serbia an ultimatum, surrender & stepdown or die |
| 27th June Kossovo Stabbed to death by a Serbian noble, Milos Obilic, who posed as a Serbian deserter |
| 27th June Kossovo The Serbian King Lazar I is taken prisoner & executed |
| 27th June Kossovo The Serbian nobility is wiped out |
| 27th June Kossovo Thrace, Macedonia & southern Bulgaria are added to the Ottoman Empire |
| 27th June Kossovo Turkish victory over the Serbs |