A nice quality-of-life change is coming in Patch 10.0.5, with players being able to Enable Warmode in Valdrakken!
Starting in Patch 10.0,5 players will be able to turn on War Mode in Valdrakken and their main capital city. This will be a nice quality of life change so that you don’t need to go through two additional loading screens before you can engage in some World PvP content.
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You must be in Stormwind or Valdrakken to enlist in War Mode.