I translated it this way:

Enses requirimus saevos nos,
nos ferrei reges servi fati,
morta ex terra, morti ferra tela
in hostes bello ad moventes.
Equos frenamus furentes
Capi ta superba quatientes
mortem hostibus et luctem date
acrem dimanes sternadis.
Ave nivis, ave ferrum,
Ave tela, ave cruor
Ave pugna, ave moritur.
Seculum!

[Swords we desire, we savage ones
We, the kings of Iron, slaves of Fate,
Death out of the earth, iron weapons causing death
In a host we fight to drive them out!
We rein in our maddened horses!
You arrogant ones we shatter!
Kill the enemy and give them grief!
Quickly we move to mow them down!
Hail Snow! Hail Steel / Swords!
Hail Weapons / Spears! Hail Agony!
Hail Fighting! Hail Dying!
The spirit of this Age!]