So here he stands tall, "Loud" Gunter, veteran and master of battlefront, famouse not only for his incredible strength, courage and booming voice, but for his weapon of type, rarely seen in the arms of Space Marines - his assault cannon "The Emperor's Roar".
This artifact was a gift from Magos Explorator, whos excavation mission was overwhelmed by the horde of rampaging Orc looters and nearly wiped out, when the rescue team, lead by Sergeant Gunter, descended from the orbit right in between, protecting the remaining Techpriests like a living but impenetrable shield.
With cold blood and Bolter fire they held the line, yet the numbers of xenos seemed endless... So not to say about the defenders.
And it was then he saw an assault cannon amongst other artifacts, recovered by the Techpriests, locked and loaded, ready to spill the blood of unclean, and in a moment later the six-barreled vengeance was risen and the mighty roar flew over the battlefield as the veteran shredded through the greenskin ranks with unbridled wrath and thousands shells. The battle was over in no time as the hundreds Orcs were ripped apart in a blink of an eye.
"Now it is yours" - the Magus said as the echoes of cannon fire died away "The spirit of the weapon has chosen you. THE Emperor himself has chosen you".
So the artifact got it's name. And it is interesting to note, that no one of the Expedition can recall the cannon being loaded as it was recovered in unusable condition.

translation: you are always welcome in mmy thread...^^ i think a translation is fair...for all that habve no clue in german^^

Danke. Was ist dieser Thread du von sprecht?
Ist es dass Imperial Steampunk thread?
Dass thread ist zu lange, es hat über ein hundert seiten.
Obwohl, Ich werde schnelle lese es mit das neuer Thread filternen Werkzeug.

Translation:

Thank you, What is this thread you speak of?
Is it that Imperial Steampunk thread?
That thread is too long, it has over 100 pages.
Although, I will read it fast with the new thread filtering tool.