• 1085 DR [Year of the Vacant Plain]
  • Building of the Watchwall in Aglarond by the galeb duhr of Tannath and Undergoth. »

  • 1369 DR [Year of the Gauntlet]
  • Hammer Thay launches its latest invasion attempt against Aglarond in the winter. Szass Tam creates a vast army of undead to cross the frozen Umber Marshes. The animated corpses crash like waves against the Watchwall but fail to overcome the fortification. »

  • 1370 DR [Year of the Tankard]
  • The former Magister, Alvaerele Tasundrym defeats 12 Red Wizards who were attacking Velprintalar, who were attempting to draw out the Simbul (who was again away).

    Although the Red Wizards withdraw from the Umber Marshes, the battle is not over. As autumn falls, undead creatures trapped in the swamp claw their way out of the thickening muck. Without the leadership of the Thayans, they wander about aimlessly to this day, hurling themselves upon the Watchwall. »