Yeah, I found that strange on Fronen's behalf, I would have supported Enweil in Lopa, and then in Cjelorg, when they begun the TO's there, or at least stop and defend Enweil in Cjelorg especially when we were coming to hammer them. Fronen just quit Yncaalo after their losses and ran right past their allies.
Update for those not in the know
3 battles in a row, in 3 different regions, Riombara won all of them. Its odd though, we could also use some more nobles to head to Riombara, plenty of opportunities to get ahead, and to fight on the winning side.