Vanguard was the Alliance Expedition's fortress built to surround the Dark Portal in Hellfire Peninsula, Draenor. It was repeatedly besieged by the forces of Ner'zhul's Horde of Draenor.
World of Warcraft
This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore.
Although it was immediately absent in The Burning Crusade, the tower at Shatter Point, Honor Hold and the Expedition Armory may all have once been part of the sprawling fortifications.