Rubuta ci gaba don wannan sakin layi - Gallipoli (daga Kallipolis na Girka, Gelibolu na Turkiyya) koyaushe wuri ne mai mahimmancin mahimmanci, saboda yana sarrafa mashigar Dardanelles. Tuni a ƙarƙashin Daular Byzantine, ya zama sansanin sojan ruwa. Turkawa na Ottoman sun fara kama
sansanin soja mai karfi daga Byzantines a shekara ta 1354, tare da sauran wurare a yankin, wanda girgizar kasa ta taimaka wanda ya rushe ganuwar su. Gallipoli ya tabbatar da Ottomans a cikin Balkans, kuma ya zama wurin zama na babban gwamnan Ottoman a Rumelia. An sake kama sansanin soja don Byzantium ta hanyar Savoyard Crusade a 1366, amma an tilasta wa Byzantines da aka kewaye su su mayar da ita a watan Satumba na 1376.