In an effort to strengthen the capacity of law enforcement agencies in Nigeria on gender-based violence and trafficking in persons, the International Organization for Migration in Nigeria previously developed two training guides for the Nigeria Police Force (NPF). As one of a three-part training package, this manual is based on a capacity assessment and consultation conducted with the NPF and Nigeria Security and Civil Defence Corps (NSCDC) in North-East Nigeria. This manual is practical and operationally oriented and is not designed as a series of lessons or academic treatise, but a practical “how to” guide that integrates and contextualizes training materials, resources, research and best practices developed by other agencies and experts to fit NPF and NSCDC needs in North-East Nigeria.