This has worked for me, and if you want a file that makes the player do absolutely nothing (this includes military) just write on a Notepad document:
(defrule
(true)
=>
(do-nothing)
)After you have written this on a Notepad doc select save, where it says file type select All Files (*.*) and type in X.per (X = whatever you want the script to be called), save it in the AI file. Then open a new file but this time leave it blank, file type should once again be All Files (*.*), but this time save it as X.ai (X = whatever the .per file was called) Then select this file as the computer AI.
This makes the computer do nothing at all, but they're still affected by triggers.
I hope this isn't too unclear.