Fallen Sky Lords (Alliance) Travel to Frostwolf territory and search for Wing Commander Slidore, Wing Commander Vipore, and Wing Commander Ichman. Return to Commander Duffy should you complete your mission.
Alterac Valley Horde Quest
Fallen Sky Lords (Horde) Find out what became of Wing Commander Guse, Wing Commander Jeztor, and Wing Commander Mulverick. Return to Commander Mulfort should you complete your mission.
The Battle of Darrowshire Place the Relic Bundle at the Darrowshire town square.
Prevent Davil Lightfire's death until the death of Horgus.
Prevent Captain Redpath's death until Redpath the Corrupted appears.
Defeat Redpath the Corrupted.
Speak with the spirit of Joseph Redpath when he appears at the town square, then speak with Pamela at her home.
Eastern Plaguelands Alliance & Horde
When Smokey Sings, I Get Violent Travel to Plaguewood, northwest of Light's Hope. Destroy 8 Scourge Structures by using Smokey's Special Compound at the Mark of Detonation planted inside each building. Smokey has had the Ziggurats and Slaughterhouses marked.
Once you plant the bomb, leave the building and marvel at your handiwork.
By the way, Smokey's Special Compound is rather... unstable.