This chapter investigates the way the International Committee of the Red Cross (ICRC) has dealt with the issue of missing persons and the identification of dead bodies in armed conflicts and other situations of violence, covering the period from its creation in 1863 to the end of World War II in 1945. It shows that the ICRC does not record the number of people killed in armed conflicts, but is aware that disappearances are a highly emotional issue. The chapter concludes that families have the right to know the whereabouts of their relatives, and whether they are dead or alive. Therefore, providing information to the families of the victims is a humanitarian action.