An interesting piece piece today in IRIN examining whether child soldiers should be prosecuted for war crimes. The Geneva Conventions provide special respect and protection to children but do not specifically address the issue of prosecuting child soldiers. International humanitarian law does, however, provide that children should not be on the battlefield in the first place. The Rome Statute of the International Criminal Court concurs and provides that recruitment of soldiers under the age of 15 is a war crime.
For a summary of how international humanitarian law protects child victims of armed conflict and our activities in this field, see this statement by ICRC President Jakob Kellenberger.