Need help with scenario.txt

[Leao]

How can I make a unit appear at the top of a scenario introductory text ?

[Gothmog]

I think there are 3 things that have to be true to get the little guy to appear in your scenario's text.
1. You have to be using objective scoring, i.e. 1 or 3 points for objective cities.
2. Player 1 must be the protagonist.
3. When you save the scenario file, you must save it as player 1 with the unit you want displayed as the active unit.
If you are not using objective scoring, you can't do it.

[Allard HS]

You don't necessarily need the active unit (blinking) to be a unit of player 1, as long as it is one of YOUR civ's units.

I have no idea what the reason is that objective needs to be turned on, but hey, it works, so no need to think too much about it.