The footage shows children who appear to be as young as five-years-old firing an array of weaponry, including handguns, AK47 rifles and heavy machine guns.
Lined up in neat ranks and dressed in traditional baggy shalwar kameez, some children struggle to absorb the recoil when firing their weapons.
A group called the Turkistan Islamic Party, based in the lawless Waziristan region of north west Pakistan, is believed to have filmed the video, which is titled "Little Commandos'. It is thought the group operates camps to train militants for operations inside neighbouring Afghanistan.
An al-Qaeda-affiliated terror group posted a video online showing about 20 children practicing firing pistols and guns in the group's training camp.
Some of the children are so small the shock wave nearly knocks them over.By the way, in case you did not notice, some of those those kids were crying "Alahu Akbkar" as they shot off their rifles.