There is a very, very easy way to do this...
Well I think it's easy at least. I used it to take off the limit on Hessian soldiers and also edit their stats.
You can use the Pack File Manager provided by LtChambers from TWCenter.net.
Go to the post here:
www.twcenter.net/forums/showthread.php?t=234546
The latest version (1.11) can be downloaded here:
sourceforge.net/project/showfiles.php?group_id=255723&package_id=313260
So basically save that to your desktop or whatnot, unzip it and dump it in a folder.
Then run the executable file PackFileManager.exe.
Click File and then Open and go to following directory steam\steamapps\common\empire total war\data and open patch.pack
1. Expand the patch.pack tree by clicking the + sign. The tree will expand. ***I backed up my patch.pack before tinkering with it.***
2. Find db and expand that.
3. Scroll down and find unit_tables and expand that.
4. Click units and let it load.
5. On the right side of the screen a table will appear. You can filter your results by clicking the drop down menu labeled Screen Name.
I'll use Hessians as an example. Click the Screen Name drop down menu and find Hessians. You can get to the H's faster by pressing H on your keyboard. Once you've found Hessian Line Infantry, click it.
Now it should only be showing Hessian Line Infantry in the table.
You can tab over and edit cost and upkeep, but keep tabbing over until you see a column labeled Unit Limit.
Change that to 0 and then hit tab again.
Then click File and Save. This allows you to recruit as many as you'd like.
Also, the changes are compatible with saved games as you're only changing the stats and properties of the unit and nothing integral to a campaign.
Hope this helps.
it's clear for me and it works for me either