these are some of my thoughts about this topic
•being a soldier is very hard, training is vigorous and you will get hurt. You will most likely experience physical trauma
•physical trauma and mental trauma go hand in hand. A 12 year old is still a child.
•you will most likely not be able to express yourself which causes anger issues and other mental health issues like depression in children
i don’t really know a lot about this stuff but i hope this helped! <3