Except those dead ones had families that cared for them. Dead children that will no longer get an education and improve the world. Dead people who were in the workforce, delivery drivers, postal workers, cooks, nurses, teachers. I'm sure you'd care a whole lot more if you're relative was sick, but there aren't any doctors alive or even a functional hospital around, and you wouldn't even be able to drown your sorrow at your local maccies is closed because it can't get ingredients delivered.

I get that it's impossible to feel a personal sorrow for everyone who dies in a war, but you can at the very least emphasise with them.