I'm looking to trace back an old anime that has artistic quality akin to Ghost in the Shell. The premise is the human race is in a post-apocalyptic scenario in which the enemy are these spectral-like monsters which can flow through walls and basically kill humans just by phasing through them.
I remember two scenes from the film
a group of soldiers on a cargo plane get surprised by these monsters (which look like huge, long, dragon-like but with any wings really) - the soldiers get phased through by the monsters and die.
a special unit returns from a mission - they had to fight some of these spectral beasts and one of the soldiers got infected by some of the spectral entity or whatever - he was placed in a special machine where a scientist basically has to perform a rapid surgery using his system to target the foreign entity wreaking havoc on the soldier and killing it by means of some kind of photon beams.
Anyway, that's all I remember. No magic. Can't remember where the monsters come from, or how humanity was planning to eradicate them. Definitely post-apocalyptic (in the scene where the soldiers are flying over. you can see the remains of skyscrapers amidst what has become a sand-swept desert.)