Hi Guys ... AlanB made a general query about artillery fire on units in buildings and I've managed to find the ref from the FAQ's from Rackham's own forums when they where still on the go ...
Q18. Does a unit located inside a building or bunker receive a cover save from indirect fire?
A18. Being inside a house does not provide any real protection from bomb shells . Because of the shrapnel and debris flying around and the roofs falling down, a house will not protect your fighters from artillery fire. However the mission may use the following rule for a fortified building:
Improved cover: A unit in a bunker gets "3 +" cover tests. This cover test also applies to artillery strikes and indirect fire weapons, except “Projection” weapons.
... Hope this helps ... Walts
I've added the two Rackham FAQ's to our AT-43 Resource downloads if u want to read them, their pretty interesting reading and direct from the horses mouth, before it got sent off to the glue factory! ... Walts