Well I followed instructions from Kekvitirae exactly:

To create new units follow these steps:
1. Open up your unit_prod11.txt file in Notepad and search for a unit that is a close match to what you want to create. To create a new heavy spear chucker, simply find the Bonnachts (found in the Viking's unit_prod11.txt file).
2. Highlight it all, right down to the beginning of the next unit under it.
3. Select Copy.
4. Scroll down to the point where the unit list ends and emptiness begins. If you have word wrap off, it wont be too far down.
5. On the line under the last unit, hit Paste. You now have an exact copy of the Bonnacht unit in the file. Save the file.
6. Download and install Gnome's editor from the Org's download tools.
7. Open up the unit_prod11.txt file with Gnome editor and edit the stats of the new unit (all the way down at the bottom of the list) however you please.

And there's where the problem is. The second copy of the unit won't show up. Jihad is the last thing there. I tried changing the name of the unit in the unit_prod11.txt and then going into the editor (in case it left out doubles or something) but no luck. What gives?