I'm curious as to what percentage you think that group represents of the whole number of graves in that cemetery. I'm probably going to regret doing this, but I'm going to give you a massive benefit of the doubt here, and assume that for some reason, you think that a large percentage of those graves belong to children who were forced into service and who went weeping to the front line where their chests were subsequently pierced with minié balls. And here's why I'm going to assume that:

If you believe that a large percentage falls into that category, then you are merely woefully misinformed, and probably a supreme optimist at heart. Ignorance isn't necessarily a bad thing, but it is bad etiquette to argue an incorrect point so vehemently when it's incredibly easy to verify the actual truth. So the worst that I could say about you is that you have your heart in the right place, but your online etiquette could use some attention.

However, if you don't believe that, if you rightly believe that the group you're referring to represents a miniscule portion of the graves in that cemetery, well then. I suppose that means that you are intentionally being obtuse about a point in an attempt to defend the people who fought and died on behalf of slavers. And that doesn't say very many kind things about your character.

So. Since I'm giving you a massive benefit of the doubt, here's some demographic information about the confederate army:

https://www.battlefields.org/learn/articles/who-fought

My best guess is that this cemetery isn't filled to the brim with buglers and drummer boys.