Battle of Sırp Sındığı (First Battle Of Maritsa) took place on the banks of the Martisa River about 15 kilometres near the city of Adrianople. It occurred in 1364 between an expeditionary force of the Ottomans led by Hacı İlbey and an allied army of Serbs, Bulgarians, Wallachians, Hungarians, Serbians led by Jovan Uglješa, Vukašin Mrnjavčević, and Louis I of Hungary.The Ottomans were victorious in this battle.The battle was the first attempt to throw the Ottomans from the Balkans with an allied army.