Attacker - Battle At Helm's Deep

Vandalizing the countryside
Goblins march in fearless pride
Through destruction they forge virtue
Hell rats are out to get you
Gandalf carries the magic staff
Divides the armies in half
In the deeps of Helm's they engage in battle
So insane it'll make you rattle

Thunder roars, wind howls
Demons sporting crimson cowls
Hobbits fight in desperation
The bloody war had no inspiration