___concentrate_fire.pack
This is a small and simple mod for the Overhaul Divide et Impera.
It will grant all missile units the ability to concentrate their fire to a specific spot something that can be put to good use in sieges when the enemy is all cramped up trying to get through the gates or narrow streets of your city.
The mod can also be found on the official submod forum for Divide et Impera on TW.