And here is a little rarity - a story about a society at war, about how societies' structures and norms change in such circumstances, but especially about the price of taking up arms and of killing, and an unusual take on how to end war and bring about peace.
Unusual, maybe, but something I can greatly sympathise with - described and executed with the clarity and simplicity of mind of a child, and an impeccable logic.
The Days of the War, as Red as Blood, as Dark as Bile by Aliette de Bodard is set in her Xuya Universe, in the future/SF branch, and was originally published by Subterranean Press. A lot of things remain unsaid, unexplained, and you don't need to know them to appreciate the story and its marvelous conclusion. You also don't need to be familiar with the other Xuya works to appreciate this, either (but I would suggest you start reading these should you like this short story!)
The image on the right comes from Pinterest and without original attribution - if anybody knows where it is from then please let me know, so I can add credit where credit it due!