If he did know that by fighting the legion was helping the Thalmor, he would call a truce or try to make peace with the legion as he depises the Thalmor. Ulfric is helping the Thalmor by fighting the legion even though he is unaware of it. Just presenting facts and stuff, as I see it. *I hope that this doesn't sound at all mocking, or rude at all.

The Empire saved many thousands of lives, and lives to fight another day. An empire refusing to cooperate means many men and woman, many INNOCENTS, would die, and the survivors would have the Thalmor's strictest laws and regulations forced upon them, with no political force in between to protect the citizens of what would have been *the former Empire*. One man refusing to cooperate means just that one man dies. They might have more, and if they get released before you can put that information to use, it gives their allies chance to counteract some of the damage done when Ulfric rejoins them and tells them that he squealed.ДЈ. Perhaps he broke when they threatened the lives of some other people, but there is absolutely no evidence to even *suggest* that.Why *wouldn't* they continue to have him in holding? If somebody gives you useful information, keep them around a bit longer. There is nothing else to indicate that it was *not* purely self-serving. They say give up your allies, you say okay. Regardless of how exactly it happened, they still used him as a pawn.Дў.Wat.

Ulfric stormcloak is a thalmor agent