The starting army is 2 lines above the starting spell list in HERO.TXT. Note that you can change your starting Leadership and give yourself a Bone Dragon! You can give yourself more runes, gold, etc. - they are all there under the heading for the hero type you wish to change.
Note that the unit names for your army must match their ATOM - look in SPECIAL_PARAM.TXT and you'll see a bonus for "sp_lead_all" that is close to the top of the file. All the official ATOM names are listed there and you can put whatever you want in HERO.TXT - you can even expand it all the way out to 7 units (from 3) if you'd like, just make sure you terminate it properly (i.e. no | is needed at the end, just the unit name, "|", and number).
Once again, a misspelling here or improperly specified army list will crash the game when starting anew so just be careful and make backups of everything.
By the way, it'd be nice to use the Demoness as a template and devise a fair starting army for the other classes if they are underpowered or don't get any good units from their starting location. I have not played the other classes, so I don't know what you can get...
So who's equivalent to 2 Demonesses and 1 Demon for Orc / Vampire? Maybe you can even toss in 5 Cerberi for comparison between armies you should have by the time you get to the Catacombs with all 3 classes.
/C\/C\
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