Gjallarhorn is the horn with which the gatekeeper God to New Eden, Heimdallr, announces the coming of Tyrants and and bandit's.
The horn will sound, and the gates to Valhalla will open. So the Warriors of EvE will march into battle to defend themself from tyrany.
Should a warrier die, he knows the beautiful Valkyries will bring him back to the hall's of Valhalla and place him into a new body, so he can rejoin his fellow warriors in glory.

So we are the legions of Valhalla. Pure Danish vikings, and we only accept Danes in corp