Tarantino pretty much said that he dosen't even consider this a war movie.
It's a spagetti western, just with WWII iconography.
It's also an homage to old Italian exploitation war movies of the 60s and 70s, sometimes called "macaroni combat".
Tarantino basically makes exploitation movies for the modern age, so complaining that he's no Jean-Luc Godard is like complaining that Frank Miller is no William Shakespeare. It's a completely different kind of medium. So people need to stop rating everything like it should be up to the standards of classical literature.