Bobchillingworth
Unregistered
Ah, I see what you mean, although my experience has been that the AI usually supports its forces with at least double hex formations moving concurrently. My problem has been that the AI is surprisingly good at tracking the power graphs, and so whenever I lose too many units clearing a lair or dungeon or whatever all of my neighbors immediately start advancing their mobile forces on me. That, and the AI no longer mindlessly smashes its armies against whatever targets are closest- now they've happy to simply burn all of your sectors if you try camping your main military force in a fortress city. Also I've seen them use nasty tricks like sending three armies at one city, while a fourth quietly teleports or disembarks in my backlines while I'm distracted.
Honestly, it's probably the best AI I've seen in a 4X game in a long time. It spends all of its Cosmite upgrading random units though, so it usually doesn't have enough to expand past five cities or so.