The subject matter of this thesis are Nuremberg trials and their impact on further development of the international criminal procedures. Nuremberg trials entail series of trials conducted at the end of the second world war over defeated Germany. So-called main procedures led against high-ranking persons accountable for crimes trough the aspect of jurisdiction of the established Court, pre-trial proceedings, course of the trial proceedings and the judgement will be analyzed in this thesis. It is important to emphasize the significance of the judgement that paved the way to the development of the international humanitarian law and shaped the awareness of applicability of the international law on individuals. The reaction of the international comunity upon the wars and immense human sufferings beginning with the establishment of the ad hoc judicial body, following the establishment of the permanent court fifty years after Nuremberg is best outlined in the abovementioned. All of the forgoing is viewed through the similarities and contrasts of judicial proceedings of the International criminal court for the former Yugoslavia as United Nations Security Council ad hoc body and International Criminal court. In so doing, special emphasis is on the rights of the accused opposite to prosecutor's powers during pre-trial and trial proceedings. Furthermore, thesis accentuates certain implemented individual measures towards particularly vulnerable victims and witnesses with regard to the rights of the accused and taking into account the gravity and nature of the crimes concerned. Likewise, these measures influenced positive alertness on the most unprotected amid wars and their sustained traumas, but frequently they employed various disreputable actions amongst which the one in the International criminal tribunal for the former Yugoslavia generated most contention.