A new report by The Associated Press shows that child soldiers fighting for Sudan's paramilitary Rapid Support Forces in its war have been trained by Colombian mercenaries. The report is based on rare, firsthand accounts from former child soldiers. Tens of thousands of children as young as 8 have been conscripted into the ongoing conflict by all sides and many are still on the front lines. One boy described how he was shackled to an anti-aircraft gun and told to fire at army warplanes or his captors would kill him. Another said he was forced to fire artillery and beaten for disobedience.