Board Thread:Off Topic/@comment-26893431-20151108130646/@comment-25912201-20151108132008

In a sense it was the Forsworn, as when the Empire moved the army in Skyrim to Cryodil, the Forsworn caused the Markarth Incident. Which in turn caused Ulfric to start the rebellion, after he was imprisoned. That's my understanding of it anyways.