No one's child should die on the battlefield, so I hate war and never make fun of my enemies. This is my own sentence, I don't know how to make it natural.

1. No one's children should die on a battlefield. I hate war, so I never make fun of my enemies. This just moved the so in your sentence. Your words are fine, also how Aaron rewrote it is nice too.

I hate war, and I choose not to provoke and insult enemies. Nobody's children should die on a battlefield. There is almost poetry in your writing. Your words were nearly natural sounding, and you can see I only made a small edit and rearrangement. Excellent work! Excellent style!