This quest is found within the solo instance for the quest Ami Legend, which you can find Here. These two are meant to be done together and will give you your first quest leading you into Blue Mountain.
Tier 1: Collect Dog Tags
Progress through the cave and collect Dog Tags from Soldiers as you go. The dungeon, although it may not look it when you get deeper in, is actually linear with the only fork at the end looping back in on itself at the end. I took the left one first though it you want to go along the same path I took.
Tier 2: Go to the Military Camp at Blue Mountain
After you loot the last set of dog tags, you will be told to examine the mission report. Pick it up and finish doing the Ami Legend quest. Only when that’s done and you’re out of there should you proceed to hand this quest in at Blue Mountain. Just follow the road and the military camp will be on your right hand side. Select Sarge in order to hand over the Report to him and thus, finish the mission.
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