Creating a new faction and units, how?

[gunnars1]

Hello, i have been playing men of war for a long time along with its mods, and now i want to test my skills at modding this game,i am not very fond of mapping but i still want to start out at something relitively easy, what i want to do is creating a new faction along with units, using only existing assets, im looking to make a rebel kind of faction but i have no idea where to start out from, so all help will be appreciated