Seems you can only get this quest if you did Hero's Call: Southern Barrens!
Quest
Report to Aubrey
A World of Warcraft quest in Southern Barrens. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
This quest is not mutually exclusive with the quest The Admiral Won't Back Down. You can do both, as long as you don't pick up the next quest from Admiral Aubrey. Tested on my worgen warlock lvl 30 as of patch 7.0.3.
confirmed this quest and The Admiral Won't Back Down are mutual
Quest facts
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(24921))
Description
You there! Fresh off the boat? Welcome to Kalimdor, a land hellbent to kill you or die tryin'. There's trouble at the hold - as I'm sure you noticed on your way in. Admiral Aubrey needs all hands on deck if we're to make it through this. Consider yourself drafted, {class}! Follow the road up the hill and you'll find Aubrey in the tower, topside.
Community notes from Wowhead · 10 comments
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Reward details
Reputation: Stormwind +75
One of the last bastions of human power, this Alliance capital is ruled by the young but wise king, Anduin Wrynn.
Reputation group: Alliance.
Other quests in Southern Barrens that reward Stormwind reputation: Running the Gauntlet (+250), Breaking the Siege (+250), Repel Boarders! (+250), The Guns of Northwatch (+75), Run Out the Guns (+250), Langridge Shot (+250).
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.