A kid, aged 10, fondly called as Abdullah, is the youngest known volunteer fighting with the ISIS.
Abdullah joined the Sunni extremists because both of his brother and father were senior members of ISIS and were killed fighting Iraqi security forces in 2013.
The kid often loiters carrying his big gun as he stand guard with other ISIS fighters at the new ISIS headquarters in Mosul, according to a report from The Daily Beast.
According to the report, one bystander attempted to talk with Abdullah saying he has a son his age but does not want to carry guns and spends most of his time on the computer.
A hulking gunman approached the bystander and puts his big arms on Abdullah's shoulder. He proudly said that children with the ISIS do not waste time.
"Our children don't waste time on electronic games or on watching cartoons. They have a dream and their dream is to establish an Islamic state. We have a lot of hope for Abdullah and other children his age. We believe they will conquer all of Iraq and Persia and that they will liberate Jerusalem," the gunman said.
Abdullah may be the youngest fighter for the ISIS but he is not alone.
According to recent study conducted by the Human Rights Watch, children acted as snipers, manned checkpoints, spied on hostile forces, treated the wounded on battlefields, and ferried ammunition and other supplies to front lines while fighting ensues.
"The number of children fighting with armed groups in Syria is not known. By June 2014, the Violations Documenting Center, a Syrian monitoring group, had documented 194 deaths of "non-civilian" male children in Syria since September 2011," as stated in the report titled Maybe We Live and Maybe We Die.
The ISIS and another group called Jabhat al-Nusra recruit children by giving military training in school settings or as part of broader education programs run by the groups, according to the report.
Children recruits were handed dangerous tasks and were encouraged to volunteer for suicide bombings.
"Amr," who fought with ISIS in northern Syria when he was 15, said that he was persuaded by his leader to volunteer for a suicide attack but that he was able to escape before his turn came up.
"Majed," 16, said that Jabhat al-Nusra in Daraa's way of persuauion is by telling children that it was Alla who chose them as volunteers.
"Sometimes fighters volunteered, and sometimes [commanders] said, 'Allah chose you.'"