This document describes the process of transposing legal rules into concrete mechanisms to ensure compliance with international humanitarian law and adopting the means required to achieve this end. It is divided into three parts. The first presents the legal framework applicable to the use of force by armed forces and the responsibilities of the highest political authorities regarding its implementation and dissemination. The second refers more specifically to arms carriers and addresses technical aspects related to integrating the relevant law into doctrine, education, training and equipment, plus the role that sanctions play. The third part discusses the International Committee of the Red Cross’ relationship with international law and the ways in which the organization can actively support efforts to promote lawful behaviour. The document refers mainly to states and their responsibilities. However, the process and the main concepts and conclusions can be extended by analogy to non-state armed groups.