Video - Children used to fight Boko Haram struggle with trauma
The United Nations and human rights activists have accused both Boko Haram and groups fighting it, of putting children in harm's way.
But now, hundreds of former child vigilantes, who had been fighting against the armed group in northeastern Nigeria, are learning skills to help them reintegrate into their communities.
Many have returned to school or are learning employment skills.
Kaumi Kolo is one of them.