Title: Unit Cohesion from Civil Work
Summary: Your unit will gain some cohesion if they perform civil work.
Details: When you perform civil work then your unit can gain 1 or 2 points of cohesion, as they are after all working together to do something, so they talk with eachother some more and get to know eachother better, maybe even make cohesion affect how much effect civil work will have on them and the region.
Benefits: It could make the gain of cohesion a bit easier and civil work more beneficial for the unit and for the region aswell if it affects how well they do civil work.
Downsides/Exploits: Cohesion is not that hard to gain already, you usualy get atleast 1 point from training 6 or 8 hours anyways and the battles also increase it, so this could cause training to be useless if your unit has enough experience to not gain much from training, currently the gain would be cohesion, but if this gets added you can just perform civil work instead.
Though i cant come up with any possible exploits as you couldnt perform both civil and training effectivly in the same turn, usualy it is one or the other.