This part of the database catalogues the 161 rules of customary international humanitarian law, together with a commentary, identified by the Study on customary international humanitarian law, conducted by the International Committee of the Red Cross (ICRC) and published by Cambridge University Press in 2005. This part can be downloaded or ordered in English and other languages.
The practice underlying the rules can be found in part 2. Practice.

There are two views:

• View by Rule: The rules are presented in a list of 161 rule documents, grouped in 6 clusters. Each rule has a corresponding document in the part on Practice.
• View by Chapter: The rules are presented in 44 chapters, grouped in 6 clusters. Each chapter has a corresponding chapter in the part on Practice.

Whether viewed by Rule or by Chapter, a link to the corresponding practice is provided in the left-hand column.