If you messed up like I did and cleared the Greater Invasion before getting this quest, you can still get credit for the quest by going back to the spot and beating the boss again.
If you don't remember where the spot of the greater invasion point was, then click your quest to show the location on your map.
Quest
Commander's Downfall
A World of Warcraft quest in Invasion Point. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
If you see a questionmark to turn in this quest on your map in the Vindicaar but no NPC there, you need to be in the Vindicaar that's hovering over Antoran Wastes. Go to your teleporter, see how there's three Vindicaars, one for each zone? Click the one on the left and Illidan will be there to turn it in to.
Just had this issue myself.
Previous: Invasion Point Offensive
Next: Invasion Onslaught
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(48605))
Description
A champion of the Legion is vulnerable within an invasion point! Track it down and destroy it before it can return to fight on Argus.
Community notes from Wowhead · 48 comments
Top 3 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
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Reward details
Reputation: Army of the Light +1,000
After the fall of Argus, the draenei's finest warriors followed the prime naaru Xe'ra across the cosmos in an eternal war to bring about the Legion's end. Since then, other survivors of the Burning Crusade have joined the ranks of the Lightforged.
Reputation group: Legion.
Other quests in Invasion Point that reward Army of the Light reputation: Invasion Point Offensive (+250), Invasion Onslaught (+1,000).
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.