Startup
The premise is the following. A group of children is abducted from a country, officially in order to train them to become commandos later on. The officials knows such things are inefficient, but they are doing so for other reasons. The life for those children alternate between phase of simple trainings, which are tiresome but not life-threatening situation, and phase of more realistic training where those children actually experience the death of some of their friends.
Regarding the children: They are between 6 and 9 years old, from a country where children are taught earlier about craftmanship and self-survival. They did exercise a lot back then, and are from a subhuman subspecies that has a shorter lifespan but a faster cognitive and emotional development. As an example, you can expect such a 3 years old child to be able to walk, read, write, and speak as a "normal" 6 years old.
The question
What are the different expected behaviours for a child put in such stressful situation? I would like to represent this as realistically as possible, so I do expect to have an array of behaviour, depending on early education, personal preferences and personal experiences. Would they be able to cope up with us, and somewhat grow up early emotionally to withstand the pressure and to fight up to survive in such an environment?
I have already checked briefly online for academic material, but I wasn't really hoping to find a detailed thesis about people willfully testing such things on children, and I guess country that are practicing such things aren't really going into the spotlight. Nonetheless, if someone has links to something similar, I would be happy to read about it!
Edit
Some precisions regarding my underlying issues. At this point, we do follow one of those child and his comrades, while they undergo the training, but also the horrific stuff that do happen to them. Some of them are losing it rather quickly, unable to keep with pressure, while others tend to just shut themselves off and move forward to try to deal with what is thrown at them.
Very few of the children (2-3 out of a hundred) actively try to escape the facilities, which was pointed out by some of my friends as unrealistic because child would try to escape according to them from a location they deem dangerous. They were also strongly against the idea that a child could cope up with seeing another being getting brutally killed in a blink of an eye.