combat experiance

Hi Civ4 Fanatics, I am an old and big fan of civ4 and looking for some modding help. Playing bts. I would like to change a game mechanism. For killing barbarians or animals one doens't get any points on the combat experience counter in the military advisor screen. I would love to change...

I was wondering if someone has looked into the combat % gains from buildings and can comment on it. Seeing as I don't recall anyone making a fuss over it, I guess it works as stated...yet I don't see the gain from building a unit in a city with buildings that have upgrades. i.e. This first pic...