During the Azeroth Allied Forces' retreat, the order to withdraw from Warchief Garrosh Saurfang also arrived.
However, even though the Azeroth Allied Forces were all elites and could maintain perfect order during a retreat, the interference of the Army of the Light's Lightbound made it far from easy.
At the top of Light Fortress, the human archbishop Turalyon watched the steadily withdrawing Azeroth Allied Forces and understood that his plan had been seen through. He turned, dropped to one knee, and said with utmost humility and reverence to the Great Naaru A'dal floating beside him, "Great A'dal, it is time to close the net."
Although the Azeroth Allied Forces were retreating, nearly a hundred thousand of them still could not escape from the massive Light Fortress. Archbishop Turalyon had been absolutely decisive in his judgment. Since he could no longer expand the results of battle, he would inflict as much damage upon the Azeroth Allied Forces as possible.
The Great Naaru A'dal issued the order through the Naaru's unique method of communication.
In the enormous Light Fortress, dozens of Naaru radiating different lights suddenly appeared from nowhere. The same was true on every level of Light Fortress, even in its plaza.
After appearing, these Naaru did not attack directly. Instead, they unleashed incomparably vast Holy Light energy and detonated themselves.
The Naaru were creatures made purely of energy, their bodies containing immense reserves of Holy Light energy.
Although the nature of the Holy Light gave it tremendous effectiveness against demons, void creatures, and undead, without especially powerful suppression against other living beings, it possessed a heat like fire.
The explosions of dozens of Naaru became a blazing sea of fire formed from Holy Light, enveloping the entire Light Fortress.
The immense Holy Light energy illuminated the whole of Tanaan Jungle.