Guild Wars: PvP Tactics
Update: some corrections by JR-.
If you watch some of the good teams in Observer Mode, you might see a tactic mentioned later on in the thread. Warriors hiding out with their NPCs and team in a turtle formation will usually have a wand as their secondary weapon and it'll be out spamming the nearest opponents. Wand hits build adrenaline so as soon as they come out of the turtle they'll be able to unleash all their adrenal skills on the first called target.