The demons' assault had no tactics to speak of, only the most savage fighting and the most direct attacks. In the eyes of Azeroth's renowned generals, it was utterly unremarkable.
But why did the Burning Legion win battle after battle? Because its strength was exceptional. Even the lowest demons generally had far greater fighting strength than ordinary civilians.
Demons were numerous. No one knew how many demons existed throughout the Twisting Nether. With beings like Mannoroth, Archimonde, and Kil'jaeden among its ranks as well, the Burning Legion became invincible.
Moreover, demons posed the greatest threat to ordinary life. The Burning Legion's fel could corrupt any living thing. Humans, elves, draenei, and other animals would all be corrupted by fel and become demonic. Even plants would be affected by fel, evolving into aggressive carnivorous plants.
After demons died in battle, even the blood they shed would corrupt the environment. Other forms of energy were needed to eliminate the fel contamination.
During the Burning Legion's previous invasion, Felwood had suffered severe corruption. The stench of fel filled the forest, turning all of Felwood into an eerie, gloomy, haunted place. Satyrs, carrion wolves, and even infernals occupied it. The forest had become twisted, and its plants had begun to succumb to corruption.
It was easy to imagine that even if the Burning Legion's attack on Shattrath failed, the demon corpses littering the ground would give these wielders of the Holy Light headaches for a long time.
"Press the attack! I'll turn A'dal into an ornament and set him into a Fel Crystal forever." Makazadun strode forward, casually dropping a Rain of Fire onto Shattrath's walls. The arrows fired by ordinary human soldiers merely struck sparks against Makazadun's neck and forehead, having no effect on this great demon lord.
Waving his longsword, Mogorolon fearlessly