In the "Monodium to the Fallen in Thessalonica" (PG, 109, col. 652), an eulogy written by Demetrios Kydones in September 1345, there is mention of a hostile foreign army capable of posing a serious threat to the second city of the Empire. Having in mind the positions of the warring factions in the ongoing civil war in Byzantium on the one hand, and the fact that in September of that very same year Stefan Dušan had captured the important city of Serres on the other, there is reason to suspect that the hostile army seen as a possible captor of Thessalonica - is indeed the Serbian army.
