New reports have revealed that the Islamic State trained children as young as six years old to behead their victims using a doll’s head attached to mannequins.

The mannequin with a rubber child’s head was discovered face-down in the ruins of the Iraqi city of Hatra, which was liberated from ISIS last week.

“This figure was for teaching children how to slaughter people. They showed them how to use a knife to sever the head on this figure, so they would know how to do it on a real person,” Iraqi special forces soldier Ahmed told The Daily Mail.

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