Re: Castle Defence Bonus (%d) ?
Where the walls of a castle are broken down is determined by adding up the seige and defense factors of the attackers and defenders, respectively.
The base formula for that is the strength of the unit squared, divided by 100. Thus, a unit with 10 strength counts as 1.0, while a unit with 20 strength counts as 4.0. Some units get bonuses and minuses in the final score. For example, flying units get an automatic +1. Sappers get +5 (IIRC). Mindless units get their final score divided by 10 if defending. And some units (like the Man heavy infantry) get a castle dfense bonus of +1.
Once the total scores for all the defending and attacking units are calculated, the difference (if the attackers get a higher number) is subtracted from the defense value of the castle. Once that number gets below 0, then the attackers can storm.
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