You receive Garrison Campaign: Deep Recon from [npc=81492] (Alliance Version) in your garrison.
This campaign takes you to Nagrand, and you want to fly to [npc=87395]. Head south to [npc=83051]; who is on a rise with an entrance around to the left (east) side. Unless you have stealth, or get lucky with trappers, you'll have to kill an [npc=86730] blocking the way. She is on the rise (49.8, 37.0) and lying next to a small tent. Turn the quest in and receive The Warlord's Council.
As soon as you accept The Warlord's Council you will be trapped by a net and have a bit of dialogue, then you will find yourself in a cage within the Chieftain's Hut in Mok'gol.
The dialogue will go on and on, but it will eventually stop. The [npc=83395] will mark as discovered, and the cage will open... in a bit. Once outside wait for a stealthed [npc=83053] to appear in the room for you to hand in and receive the all 3 follow-ups at once:
Plans of War
Intercepting the Orders
Putting Down the Packleader
These quests have you going around and killing certain named NPCs and collecting items from the huts. By the time you get through with all the killing required (try to activate an assault items) you will also complete Assault on Mok'gol Watchpost (though it will not count for Securing Draenor).
You turn in all the quests to [npc=81492] in your garrison.