From 2007-2010, I worked as a university teacher in Australia. One of my research interests was child soldiers. You can find two of my child soldiers lectures below. Lecture 01 is newer and more engaging, but Lecture 02 has more information and multimedia. Personally, I prefer Lecture 01. These are both the web's most comprehensive and accessible lectures on this topic.
Please feel free to use and distribute these lectures (unmodified) worldwide, with credit to Adam Wozniak - AdamWozniak.com