nealhunt wrote:
No WEs stay on the board under the official rules. That said, it used to be a very common house rule for people to leave wreckage of WEs on the board.
To expand on Meph's comment about scale, the model scale is about 10x larger than the ground scale. So, a 40mm Ork Battlefortress would really only be 4mm wide if you counted it as a big, metal boulder. That's not enough to change terrain effects over.
Except 30+* Orcs and Grots can hide behind it while it's active, and none when it's destroyed.
* Depending on how a particular group plays the Armoured Vehicle Terrain Effect, that could be 60 or more.
Morgan Vening