Our Legion was the twentieth and last legion created in the first founding. Under the critical eye of our Primarch during the Great Crusade the Legion became renowned for its discipline and strict organization. Though the youngest Legion, we of the Alpha Legion sought to outshine our brethren in things as if to prove our worthiness amidst the older Legions. We adopted the symbol of the hydra as our Legion's symbol. This many-headed, dragon-like creature from ancient myth served to remind the brethren of the Alpha Legion of our ultimate unity in body and spirit. On battlefield the terrifying coordination of the Alpha Legion was our hallmark, our attacks kept the enemy under relentless pressure while we sought a weak point in our defenses.
When Horus made his pact with Chaos the martial pride of the Alpha Legion led us to follow the Warmaster. The Warmaster was a mighty warrior himself, he commanded armies and fleets and fought at the forefront of the Emperor's wars. By comparison he made the distant Emperor on Terra seem a weak and, cowardly individual. The Warmaster was a leader worthy of our respect, the Emperor sought only to exploit Horus's conquests and crush the liberated humans of the galaxy beneath his stifling regime.
Joyously, we clashed with loyalist Space Marines on Istvaan V and the campaigns thereafter. Here at last was an opponent fully as tough, as war trained, as ferocious as ourselves. The brethren of the hydra inflicted stinging defeats on the loyalists at Tallarn, Yarant and dozens of smaller outposts before moving onwards into the Ultima Segmenturn like an all destroying comet. The Alpha Legion became entirely separated from the forces of Horus but continued to wage war on all that we came across.
Even after the Heresy failed the Alpha Legion continued to fight a covert war against the Imperium. Small units of Alpha warriors set up hidden bases in asteroid fields, space hulks and barren systems scattered throughout the galaxy while the bulk of the Legion withdrew to the Eye of Terror. Raiding parties sally out from these secret bases to catch the defenders of humanity unaware - sabotaging bases, attacking shipping, terrorizing settlements and destroying small outposts with deadly efficiency.
Far more dangerous are our connections with Chaos Cultists on the settled worlds of the Imperium. The Alpha Legion coordinates and directs the activities of Cultists across entire sectors to instigate massive insurrections against Imperial rule. These revolts are often used as a cover for a series of shattering Chaos Space Marine raids or as a precursor to a full scale invasion from the Eye of Terror. The Inquisition holds a special loathing for the Alpha Legion for our part in spreading these iniquitous daemon cults and fanning the embers of heresy into the raging fires of outright rebellion.
Now, in the 41st millennium, we continue our fight against the tyranny of the Imperium and the False Emperor, we fight for the rights and freedoms of all races, so that all will be one, and all will be treated with equality and fairness throughout the galaxy.
Workers, downtrodden peoples, and all those who have lived under the tyrannical rule of the Imperium, join us in our Crusade for Freedom!