A nice appolitically correct thread I should have expected from you General.
But aslo a perfetly valid one and I think that they will be plenty. That has been the case in the past and there is even more reason to have them in T2K.
Children soldiers were enlisted in nazi volksturm and very young men were fighting in the red army (around 16 and 17). I would argue that this will be the case again but this time in every army.
IMO children above the age of 15 will be considered good for service in many parts of the world. Occasionaly, you'll find children around 13 and 14 but they could be less common. The reason doesn't last in our humanity but in the fact that these kids will be better used elsewhere: working in the fields as soon as they reach 8, in mines between 10-14 and in factories up to 15-16.