It'd be much wiser just to tell an alternate story/world just set in a similiar era, like youjo senki.
The thing is like, if you were to realistically show ww1 foot battles, it would not be very glorious(?) or interesting for the story. There's no way the MC, let alone the whole main cast could all survive, or accomplish much. But with some suspension of disbelief you could definitely tell a compelling story in that era.
There's a class of japanese novels that are war records, mostly in fantasy. Though most are not down to gritty and down to earth.
A politically opinionated work, and a plot-focused/entertainment story of either war are two different things. The former I can't say I'd have any appetite to play, I do not like propaganda mixed in with my pastime.
"A WW2 VN does not mean it would be or has to be violent in any way. "
What? What so the main characters going to be playing poker all story long?
I do see the appeal. Reminds me of knighly characters like aliceteria from re:creators. Girls frontline has kinda similiar atmosphere I guess.
Anyone got any recs for action/heroism military type stories in any medium? better if it has waifus or female protag