Raise the Raptor High
Before the Aquila, There was the Raptor. Before the Crusade, Unification. Humanity could use some unity. - Planetary Governor Frederick Rotbart
In the aftermath of the birth of the abomination, countless symbols were corrupted into uselessness. The Imperial Aquila, turned into a source of corruption. The sigil of the inquisition, spreading the chaos it fought ruthlessly against for so long. The flag of the Adeptus Ministorum, the sign of Tjapa, rather than the emperor. The sisters of battle, once so pure, fell one by one to their own holy iconography. Even as the death of the Emperor shattered the political unity of Mankind, so did the birth of the Abomination shatter mankind's symbolic ties to each other. One by one the Human remnants cast off the signs of the Imperium, for to hold on to the banners of that time was to court damnation. They back onto less regional symbols. The standard of a particular noble house, or the banner of a Space Marine Chapter. For however much they wished it, there was no major imperial symbol left uncorrupted, no rallying banner that remained. Or, at least, almost none.
One day in the Imperial Trust a tech adapt of Muspelheim was reviewing early historical records dating back to the great crusade, when he came across as banner that he had never seen before. Curious, he spent the next month inputting obscure data sequences and sifting through the immense historical databases, chasing his lead. What he found astonished him. The
Raptor Imperialis, the banner that the Emperor himself fought under during the Unification Wars. Yet after Unity it fell out of favor, replaced by the Palitine Aquila that would go on to become the symbol of the Imperium, and later the Abomination. He reported his findings, and after extensive testing, Inquisitorial interrogation and confirmation by Saint Lin the Raptor Imperialis was judged true and pure.
Adoption was rapid, spreading from unit to unit, and world to world with incredible speed. By the time that the Trust High Council considered its official status its use had already begun to spread to worlds in The Dragon's Nest. They ultimately decided to demure adopting it as a realm wide standard at the moment, agreeing with Dragon's Nest that the Raptor Imperialis, the Lighting Standard, would be raised in the council chamber the first time upon the moment of unity.
Yet it has spread even beyond the Trust and the Nest, as with every human world saved from the remorseless advance of the Tyranid threat, another world raises the banner of the Emperor, the banner of unity...
@Durin This has been bouncing around the back of my brain for a while.