There are several aspects to reviewing the role of punishment in ensuring greater respect for international humanitarian law. First, there is the question of improving compliance with the law, second, the focus on the punishment itself and, third, the characteristics of the perpetrators. The situation of armed groups is dealt with separately. The article also examines transitional justice as an accompanying measure and the problem of how to take care of the victims. Finally, suggestions are presented which could help the parties concerned in the establishment of a system of sanctions capable of having a lasting influence on the conduct of weapon bearers so as to obtain greater respect for international humanitarian law.