Seventy years after its ending, Second World War in Croatia as well as problems caused by it, still make a hot, sometimes controversial issue in Croatian politics, intellectual circles, press and society. In rare cases, the diversity of opinions on mentioned problematics affected even the country’s foreign policy. The author of this thesis aims to use the most relevant, available works of Croatian and some foreign historiographers and through eleven chapters give the short display of relevant war events and other important elements on his choice. The first part of this paper is made to chronologically represent the events, from making of Croatian ethnic status in Yugoslavia, Yugoslav political position in Europe, country’s entry in war, development of wartime events, and finally, the liberation of Yugoslavia and the end of war. Author also seeks to mention the relevant wartime events on global and European battlefields, as well as events on territories which were not the part of Yugoslavia prior to war, but they did became after its ending, such as Istria. The second part of the thesis is dedicated to issues of wartime and regime terror victims, victims of various warring sides and other injured parties. At the end of final chapters, author seeks to exhibit the approximate figures on war damages and casualties, in order to make the picture of World War II in Croatia as complete as possible.