The Return of the Crusade?
Commander Lynore Windstryke at Wintergarde Keep in Dragonblight wants you to kill 20 Scarlet Onslaught at the Onslaught Base Camp.
To the northeast of Wintergarde Keep is a newly built encampment, set up by the Scarlet Crusade - or rather - the Scarlet Onslaught as they now call themselves. While we are unsure as to why they are in Northrend, they are certainly no less dangerous than they were before. As of last night the Scarlet Onslaught has killed twelve of our soldiers. They must be taught a lesson, <Name>. Go to Onslaught Base Camp and thin them out.
Required Level
71
Recommended Level
73
Difficulty
77
80
Start
End
Side
Alliance
Locations
Progress
Clear out the Onslaught Base Camp, <Name>.
Completion
Hopefully the message is now clear to the Onslaught. I hope it was enough of a beating to make them doubt their affiliations.
Rewards
You will also get these rewards:
You will also receive: 5 
30 
12 68
Gains
Upon completion of this quest you will gain:
- 12300 experience
- 0 reputation with Valiance Expedition