In trying to help cordas and his topic out, I found the link below. It may not help in the least, but it is very interesting reading. So far I've just skimmed over it, but it is on tanks in urban combat. I recommend all players of Battlefield Evolution to have a read. There might be stuff in it to interest Mongoose as well, for future game use. It's 6MB, so dial-up be warned.
http://www.cgsc.army.mil/carl/download/csipubs/gott_tanks.pdf
One quote from the "book" is "...tank commanders were encouraged to fight with their hatches open for rapid target acquisition." This was in the 1970's BTW. In BFE, I'm assuming the tanks are "buttoned up" from the way that the rules are written, and for play balance it makes sense.
One thing is for sure. If you look at the tanks in the game and their larger gun tube calibers (meaning longer barrels) it only becomes
more difficult to traverse that now
even longer gun tube around in an urban environment. What I'd say is "play the rules as written"
but with the following house rule. If the Tank has seen the Size 2 vehicle for at least one previous Action and it hasn't moved, then I'd have an agreement around the table that the tank can engage the vehicle with its main gun, ignoring any intervening infantry. Call it the "Target Fixation = +1 to Size rule" :lol:. Think of it as spending a Ready Action before it can fire. If the target model moves, it defaults back to the rulebook as written. So to fire on it in the second Action of the turn the tank would have had to have moved into LOS in a previous turn. It's not what the rules say, but it does allow a bit of common sense to leak through. I'd take that and run with it cordas, because I do not think that you are going to get a rules change any time soon. Just make sure that as you size up your target that it isn't sizing you up as well. :wink: