Civilikopedia says that by building duns units built in that city are given Gurilla promotion, but this is not the case, in fact! I built an axmen, and thre is no promotion.

The Dun only provides free Guerilla1 promotions to Recon, Archery and Gunpowder units, because these are the only units that are regularly allowed to receive this promotion. All other units won't get free Guerilla promotions (except for Gaellic Warriors, but the free Guerilla is the thing that makes them special.).

Thank you !

The gaelic warrior would be greater if it would also receive another guerrilla upgrade, so he would get guerilla II straight away. Right now it is just a swordsman that is nothing out of the ordinary if there are no hills present.

it is just a swordsman that is nothing out of the ordinary if there are no hills present.

A swordman which can be build with copper :)