Their teacher claims he is giving the children an education before they move onto military training
The video immediately cuts to a young boy, pictured, field-stripping and rebuilding an AK-47 assault rifle
All of the fighters are wearing matching grey camouflage uniforms, with the exception of the leader of the group who is wearing a black tunic.
The video claims: 'Meet some of our newest brothers from the land of Kazakhstan. They responded to the crusader aggression with their hijrah and raced to prepare themselves and their children, knowing very well that their final return is to Allah.'
One of the Kazakh fighters said: 'These brothers made hijrah recently and they're now in training camp. They are preparing themselves to fight the kuffar (non-believers) and the mushrikin (polytheists) who are spreading their kufr and shirk, and to fight the tawaghit (sinners) in their various forms.'
The propaganda video shows a group of new adult ISIS recruits from Kazakhstan training in an assault courses and receiving specialist sniper training. Ranging in age, the adults are also shown in a classroom being taught about the firing range for different sniper rifles - including weapons from the United States.
The video states that 'soon they will be ready to join the army of the Islamic State' before shockingly revealing the role of Kazakh children in ISIS.
The video shows the youngsters shouting God is Great in Arabic.
The video states: 'They begin their days in search of knowledge in the schools of the Islamic State where they are taught to hold firmly to this creed. This is coupled with a resolve forged in the midst of worldwide crusader aggression, which together form the ultimate base for raising tomorrow's mujahidin (fighters).'
The video shows the children learning how to read and write in a classroom before military training
It also shows Kazakh men receiving instruction in the use of sniper rifles and other infantry tactics
Unlike the recruits, the sniper instructor is masked as he teaches the men how to deal with range
The young boys are shown catching the bus to their religious school. One of the boys mimics pointing a rifle towards the camera whilst others recite ISIS slogans.
The boys are then shown being taught the ISIS radical interpretation of Sharia'h law in a classroom. A Kazakh cleric is shown sitting in the classroom, where he tells the camera what it means to be a Kazakh in the Islamic State. 'We spent our childhood far away from this blessing. We were raised on the methodology of atheism, and Allah's refuge is sought.'
He goes on to denounce the West, claiming 'the kuffar poisoned our minds.' He insists 'Our children are happy. They're living in the shade of the Qur'an and Sunnah.'