How are you supposed to shoot behind buildings?

[S-Array 03]

Played a couple hours on the demo and the game looks cool enough but my one pet peeve is that there's no camera rotation. I just searched for it and saw that the explanation was because of the way some textures are made.

So anyway there will be situations where an enemy in behind a tall building and you only see their outline. How can I aim at those enemies? Mousing over where they are, as one would expect, makes you aim at the building wall or towards the roof or whatever it is that is between the soldier and the camera.
Does mousing over right over the outline provide correct aim in that situation? Is there some other trick? Same question for throwing nades behind buildings.

It's rather frustrating dying because you literally cannot shoot back in such situations :/

[Onimaho]

Usually I'll aim in front or behind the building for these situations.

[Newb.]

If you mouse over them your guy should stay aimed on them

[shelden176]

depends on the map. if they stick their foot out, AIM for their feet. Some map indoor object can be penetrated with High caliber rifles like SA-58. otherwise toss a flashbang, stinger and push them.

Shield works as well.