Armour in Woods or Towns

[Liebchen]

Is there any disadvantage for AFVs to be in this heavy terrain?
Do the AFVs gain the full defensive bonus?
And is there any debuff to their attack?

Similarly what about Artillery.
Is it best to place them in Woods/Towns or in the open?

I am playing France40 at present.

Vehicles and guns gain defensive bonuses for terrain, just like infantry does.

The only exception to this I can think of is that vehicles do not benefit from hard points like bunkers.

Well, that and the rule about being in T-mode in restricted terrain.