[Endoperez]

Few additions:

I would run one turn of the game, set Man to AI, send some Messages to All as Ulm to tell some story about how you managed to take control of the nation of Ulm, and as Man to tell that war is on, no mercy shall be given, etc.

I would make Ulm start with some characters (like Master Smith) that go well with the story, and made them a prophet on the first turn. With map commands, I could even give them some equipment if that was needed.

As long as I didn't use any mods, all of this would work with anyone having the graphics for Clash of Titans map of Targa.