The article analyses post-authoritarian societies of Serbia and Greece in reference to nationalism and the process of democratization. It is a study of the post-dictatorial Greek and Serbian societies in the periods following the end of the Junta and Milosevic's rules. The comparison of these two cases identifies legacy and elements of continuity of the past regimes as features detrimental to the democratization process. The article discusses the inextricable link between the types of "revolutions" or regime changes, where a significant segment of power remained in the hands of the old regimes' structures, which resulted in the creation of somewhat truncated democracies. Failed military ventures and national projects as crucial factors in the development of these post-authoritarian societies are analyzed as well. The case studies of Greece and Serbia and their transitions to democracy, which the article deals with, contribute to better understanding of democratization models and their successful implementation.