I want to make a manga (a real serious one, meaning I will want this one published, so I have to think about the target market). I have plan pretty much about everything (character, setting, story, etc).

It's about war that happened in my country. The setting is at WW2 and the enemies are Holland and Japanese (yeah, we fought against both Allies and Axis, scary...).

One last problem is... is it going to be real history genre or alternate one. If it's real history, then well... that's it. Nothing fancy, just a war manga. If it's alternate, then I will add quadpedal mechanized units into the war along with tanks, and some weapons that several years of the time.

According to your personal opinion, which should I choose? And why?