Customary international law consists of rules that come from "a general practice accepted as law" and exist independent of treaty law. Customary IHL is of critical importance in today’s armed conflicts because it fills gaps left by treaty law and therefore strengthens the protection offered to victims. The Customary IHL Database is the updated version of the Study on customary international humanitarian law conducted by the International Committee of the Red Cross (ICRC) and originally published by Cambridge University Press. A summary of that study can be found here.
The database contains: