Rebel Yell

Acquisition

 * Talk to Gedrel of Ascalon [Vanguard Herald] in Eye of the North after attaining the first rank of the Ebon Vanguard title.

Trivia

 * The skill icon shows Captain Langmar.
 * Likely named after the battle cry used by Confederate soldiers during the American Civil War, and/or the song by the English rock musician, Billy Idol.