Re Child Soldier Law. A nickname for the "Optional Protocol to the Convention on the Rights of the Child on the involvement of children (people of 17 years old and less) in armed conflict (war)". Look it up. It applies to people recruited into war by either state military forces or armed groups. There is no other way to be in a war. This is an international treaty that countries can choose to adopt into their laws, and reject at any time, or put conditions on. Canada & US adopted it, obligating themselves to provide rehabilitation and re-integration into society of such people, obviously with appropriate security measures. Head of child soldier program called K a "classic" example. Military judge did not dispute.