From: Arnhem (holland) yes a bridge to far...
Ok, there is a difference between "fortifications" and "coastal defense" guns.
Fortifications can't be destroyed by bombardments or air attacks. Coastal defense guns however can be disabled/destroyed through either naval bombardment or port attacks.... In theory, ground attack could hit coastal defense guns, but the chances of actually hitting the correct unit is small.....
In vinum illic est sapientia , in matera illic est vires , in aqua illic es bacteria.
In wine there is wisdom, in beer there is strength, in water there are bacteria.