Usually when you think of a World War II strategy game, "Japanese RPG" isn't quite the first term that comes to mind. However, the folks at Atlus are looking to throw their hat into the ring with their upcoming title, Operation Darkness. A strategy RPG developed exclusively for the Xbox 360, Operation Darkness has you as a soldier on the front lines of World War II fighting against the Axis powers in Europe.
However, whereas the game has some root in history, it gains some style points by also eventually having you take on vampires and a host of other supernatural baddies with some newly developed powers of your own, and some pretty fun strat-RPG elements provide the backbone for the gameplay as well. If you're a RPG fan looking for a different take on history, then Operation Darkness might be the title you're looking for.