Change unit stats:
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the file in the 'alplayers' directory in the game folder. You can change your favorite enemy or ally. For example, the Harassment value can be changed from 0 to 100. Higher values will send more small forces .
When you summon an Ent/Balrog in a campaign before an intermission sequence, it will have a its life span reset and will not go down from then.
First go into the game directory and find the folder 'AIPlayers'.
Youll find the AIs here and can edit them with notepad (create back-ups first) but also u can make new AI scripts by opening one and changing it and save it under another name under the folder 'AIPlayers' in the directory. if it works rite there should be a new script in the game.