[NovaMan]

My compass is pointing to the best vantage point?
And it is a house with stairs and ladders.
And when i go up there. I get this:
Enemy tanks to the south!
Davis! The artillery crews are waitin' on us! Use your binoculars, dammit!
Sergeant Davis! Use your binoculars to direct the artillery fire!
Davis! Use your binoculars and give MacGregor some coordinantes for the artillery!
Davis! Get your binoculars out and relay the targets to MacGregor!
Come on, Davis! Get those bloody binoculars out and give us some targets!

I aim on the tank and then i press the [F] button and nothing happens.
I can't blow up tanks with binoculars.

And how do i get:
Press [F] to call in Artillery.

I always get this:
Press [B] to look through your binoculars and direct artillery.

I mind the broken artilleries is smoking, thus unusable. Why should i use binoculars a long distance away from artillery ground cannon? This is impossible for me.