Which purpose does civil law have?

The primary purpose of civil law is to resolve disputes and provide compensation for someone injured by someone else’s acts or behavior. The primary purpose of criminal law is to prevent undesirable behavior and punish those who commit an act deemed undesirable by society.

Explanation:

although the legal justifications for the trials and their procedural innovations were controversial at the time, the nuremberg trials are now regarded as a milestone toward the establishment of a permanent international court, and an important precedent for dealing with later instances of genocide and other crimes

i'd assume india mainly because of how isolated japan was.   plus it is a whole china away.