[quote=@Bartimaeus]
Okay hm im in quite a ruck here, i need to find a way to make it realist for a child or 7 or so to fight grown warriors.
[/quote]

9 times out of 10, you won't. Unless the child comes from a very strict, warrior orientated class in which children are indoctrinated into the warrior caste as soon as they can walk and hold stuff. Even then they'd have a high death rate, because they are children.