The beginning of the Early Modern Era in the Croatian lands will be marked by the increasingly frequent arrivals of the Ottomans, and during the Hundred Years' Croatian-Turkish War, which began with the Battle of Krbavsko polje in 1493. and the Croatian defeat, they will begin the process of conquering almost all of Croatia. The rare remaining unconquered parts at the end of the 16th century, after the final Croatian victory in the Battle of Sisak in 1593., will be popularly referred to in literature as the remnants of the once glorious Croatian Kingdom. This entire period will be marked by the activities of Croatian humanists who, through literary and diplomatic means, strove to bring the difficult situation of the entire Croatian nation closer to the popes and rulers of Europe, and through these means to obtain the necessary material, military and human aid for defense against a merciless enemy. This work will focus on the activities of six Latinists who tried to get the same through their appeals in the form of speeches and letters. At the beginning of the 16th century, in such and other works of the antiturcica genre, which this paper deals with, Croatia began to be called Antemurale Christianitatis, meaning a shield defending Christian Europe from the Ottomans. This and similar topoi will become a constant in anti-Turkish literature, which will call for the unification of all Christians in order to achieve the goal - the expulsion of the Ottomans from Europe.