Because the jihad is as old as Islam, it has been championed by diverse peoples throughout the centuries (Arabs in the Middle East, Moors (Berbers and Africans) in Spain and Western Europe, etc.). 

Islam’s successful entry into Eastern Europe was spearheaded by the Turks, specifically that tribe centered in westernmost Anatolia (or Asia Minor) and thus nearest to Europe, the Ottoman Turks, so-named after their founder Osman Bey. As he lay dying in 1323, his parting words to his son and successor,

Orhan, were for him “to propagate Islam by yours arms.” This his son certainly did; the traveler Ibn Batutua, who once met Orhan in Bursa, observed that, although the jihadist warlord had captured some one hundred Byzantine fortresses, “he had never stayed for a whole month in any one town,” because he “fights with the infidels continually and keeps them under siege.” 

Christian cities fell like dominos: Smyrna in 1329, Nicaea in 1331, and Nicomedia in 1337. By 1340, the whole of northwest Anatolia was under Turkic control. By now and to quote a European contemporary, “the foes of the cross, and the killers of the Christian people, that is, the Turks, [were] separated from Constantinople by a channel of three or four miles.” 

By 1354, the Ottoman Turks, under Orhan’s son, Suleiman, managed to cross over the Dardanelles and into the abandoned fortress town of Gallipoli, thereby establishing their first foothold in Europe: “Where there were churches he destroyed them or converted them to mosques,” writes an Ottoman chronicler: 

“Where there were [church] bells, Suleiman broke them up and cast them into fires. Thus, in place of bells there were now muezzins.” Cleansed of all Christian “filth,” Gallipoli became, as a later Ottoman bey boasted, “the Muslim throat that gulps down every Christian nation—that chokes and destroys the Christians.” 

From this dilapidated but strategically situated fortress town, the Ottomans launched a campaign of terror throughout the countryside, always convinced they were doing God’s work. 

“They live by the bow, the sword, and debauchery, finding pleasure in taking slaves, devoting themselves to murder, pillage, spoil,” explained Gregory Palamas, an Orthodox metropolitan who was taken captive in Gallipoli, adding, “and not only do they commit these crimes, but even—what an aberration—they believe that God approves them!” 

Battle of Kosovo by Adam Stefanović (1870) After Orhan’s death in 1360 and under his son Murad I—the first of his line to adopt the title “Sultan”—the westward jihad into the Balkans began in earnest and was unstoppable. By 1371 he had annexed portions of Bulgaria and Macedonia to his sultanate, which now so engulfed Constantinople that “a citizen could leave the empire simply by walking outside the city gates.” 

Unsurprisingly, then, when Prince Lazar of Serbia (b. 1330) defeated Murad’s invading forces in 1387, “there was wild rejoicing among the Slavs of the Balkans. Serbians, Bosnians, Albanians, Bulgarians, Wallachians, and Hungarians from the frontier provinces all rallied around Lazar as never before, in a determination to drive the Turks out of Europe.” 

The Bosnian Muslim who were fighting the Serbs, they actually wear the skull and swastika emblem of the Nazis on their caps and uniforms. When the Serbs were winning, they (Bosnia Muslim) appealed to NATO for help, crying genocide, but if they had won, they would have slaughtered every Serb, men, women and children!