Children are what make the future. They are also what is next to defend it. Wars have happened before and they could possibly happen in the future, and people need to be ready for that. The children that are born today are what is needed for us to be ready. They could be trained to be ready for anything that could happen in the future, and they could be trained sooner than the age we are training people already.
If the children choose to be put into military training, they would be much better than what they would be if they joined as adults. They wouldn´t start out with normal military training, but with training that suits their level. They would get to the level of what they would be as adults before they even get to that age and be able to grow so much more. They won't be overworked but would be pushed to be able to do great things. Not only would it be beneficial for them to be in the military, it could save them
"I want to go"
Ender chooses to go with Graff to become a soldier Ender chooses to go also to save himself from Peter Ender ends up becoming one of the greatest commanders
Kids should be allowed to choose if they want to be trained in the military before a certain age.
"Some children choose to join a military organisation as a route out of poverty, for protection, or as a way of making up for the loss of family or a lack of education."
When Ender goes with Graff, he could have been forced to go, but he wasn't, he chose to. As Ender goes through the Battle School he shows time and time again that he is improving and overcomes the others. He then eventually becomes one of the greatest commanders they have ever seen.