Hi, I was wondering about collateral damage. For an example, I have an Artillery at 18 strength and attack a stack of Mech Infantry. Does the Artillery attack one specific unit with the full 18 (18 against 32 for example), and the collateral damage done to the other units is a bonus? Or is the 18 spread out so the Artillery has numerous simultaneous battles with, say, 3 strength versus 32 strength five times?
Thanks,
Kev.

All this and more at Arathorn's Combat Explained (http://www.civfanatics.com/civ4/strategy/combat_explained.php).

It has 18 strength vs the primary target. Collateral dmg will be distributed to other units throughout the stack. Most likely slight damage to an additional 8 units in a stack in the case of an artillery.