I see war as a place to give characters extreme experiences. A setting to explore human behavior, rather than being about the war.
And I tend to pick anything other than run of the mill characters and circumstances. Like a Soviet woman combat medic, or a Ukrainian partisan having to decide whether to fight the Nazis or the Soviets.
I'm afraid that's still overdone to me. I'm not just talking about the outright military and Nazi aspects that everyone knows about. I mean all of it. History is one of my passions (I moderate a history forum) - I've seen it all many, many times.