I just recently figured out how to reveal the map (removing the fog of war) for all the players in an AOD map. This can be done using the action "Map\Shroud or Reveal\Reveal the entire map permanently for a player.". You can use the player , but this only works for the host of the game when the script using it is in the PlyrCivilain script folder. But if you choose the skirmish player that your using for the AOD map, then it reveals the map for all the players! I have no idea why this works, I just know it does. But I pretty sure it only works if you put in into the PlyrCivilian folder. I've summed this up in the list of instructions below:

1) Open up the script menu of your AOD map
2) In the PlyrCivilian folder, create a new script.
3) Open in "Action" tap & edit the null action there.
4) Choose the action in the "Map" folder followed by the "Shroud or Reveal" & click on the "Reveal the entire map permently for a player." ("Map\Shroud or Reveal\Reveal the entire map permanently for a player.")
5) Click on Player '???' link & select the the skirmish player you choose for you map. (If have GLA as the skirmish player, then select "SkirmishGLA".)

That should do it!