Well, at the last encounter CE fielded a mobile army of 20k CS. We (by that I mean General Tharan) made some maneuvers to beat them in the first round - but after the second round we (Tara) were annihilated and CE ha 9 k CS left.
In the latter day Atamara, I wouldn't call that a weak army. They just needed some proper motivation, and a play war with Minas Leon didn't turn them on.
You have no idea how much I've had to try and convince people this could/would happen. It'd get even bigger if the island wasn't going to be an epic bathtub. Which, in some ways, means it's a good thing this is happening.