I've moved this from the 'making a new campaign map' tutorial thread as it was not relevant to the topic.


There isn't a simple way of adding a faction from BI to RTW, it involves a lot of files not just one. The only thing easier about taking a faction from BI and trying to add it is that the components (models, textures and symbols) are already made for you - you still have to add everything individually in the same way as you would if you were trying to convert a faction to something else.

Starting point just to change name of faction is the expanded_BI.txt file in data/text - change the parts outside the {} brackets and leave the bits inside alone. So you have
{old_faction} New Faction