The Uskarian Tributary War begins with a surprise attack of Uskarian troops on the troops of the city state Guardian. This culminates in the Siege of Guardian. In E6Y536, the city states of Numiria, Appleby, Nambuhr and Guardian sign the Decree of Stone and Blood, uniting the city states for the first time since the dissolution of the Kingdom of Vardaral. In E6Y543, the Uskarian Tributary War ends with the all but destruction of Uskar by Numirian led forces.