Starting with Galactic Civilizations II, we allowed players to go and watch their ships fight it out in battle in a separate battle viewer screen. But, what if we could show the battle on the main screen? That is, what if we could just zoom in on a fleet and rather than it being the leader ship with a number by it, it actually changed to show the entire fleet? So if you wanted to watch a fleet fight it out, you would just watch it right on the map.
Galactic Civilizations IV Dev Journals