Film title (psp)?

Back then I had a few films on my PSP and now I wanted to watch them again on Netflix. I can actually remember all the titles except one (and this is exactly the one I liked the most).

As far as I remember, the film was about a war between humanity and a ghost alien race, whereby the ghosts could fly through material objects and can kill a person by touch. I especially remember a film sequence where both sides faced each other on a battlefield.

Age rating was either 16 or 18 years (probably 16). Since the film was on UMD, I guess the film was released between 2000 and 2008.

Possibly: Final Fantasy - the powers within you

The film comes very close to it but it was not an animated film