1. I can't exactly explain how to add units. It's too long. Heres the link https://forums.totalwar.org/vb/showthread.php?t=51750 it seems pretty easy to understand as it's called Adding New Units for Beginners lol.
2. Again, heres the link https://forums.totalwar.org/vb/showthread.php?t=43747 and it is pretty quick and simple.
Hope this helps.
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