Deathwing's warning still echoed in their ears.
Before long, the Coalition Forces suffered the most difficult and brutal meat-grinder battle since entering Northrend.
The two Frost Dragon kings, Malygos and Sindragosa, led the Frost Dragon legion and the Death Legion transformed from captured prisoners in a surprise attack on the Coalition Forces, causing heavy casualties.
With the Death Legion used entirely as cannon fodder, and Reincarnators on the Frost Dragons' backs ready to use military formations to offset one another,
they directly secured an enormous advantage.
Meanwhile, the crypt spiders underground stole corpses every day.
Aside from the first wave of the Death Legion, the Coalition Forces discovered that all the enemies afterward were actually their former comrades!
With the Frost Dragon legion protected by the two Frost Dragon kings and military formations, nearly every day was spent on futile killing.
Instead, the enemy forces only grew larger the more they fought.
Using the interconnected underground tunnels, they brought the essence of "when the enemy advances, we retreat; when the enemy camps, we harass; when the enemy tires, we attack; when the enemy retreats, we pursue" to its fullest extent.
They had not even begun their assault on Icecrown Citadel, yet they had already encountered such immense resistance.
A sense of foreboding also flashed through the Coalition Forces' hearts.
Then, through high-ranking undercover agents, the Allied Forces learned of Icecrown Citadel's plan.
To summon the Burning Legion!
"The Burning Legion?"
At the mention of this terrifying enemy known throughout the Myriad Heavens and Worlds, the Night Elves who knew what the Burning Legion was showed deep concern.
Even the Red Dragon Queen, who had been constantly evading the Lich King's pursuit, took the risk of setting foot on Northrend once more.
"The Lich King harbors monstrous ambitions. He actually invited