After humanity was almost annihilated they left Earth and the Cradle Worlds behind. But that wasn’t all that they left. Survivors of the Scourge invasion, Remnants of battles with Abandonists, and all those others that fell through the cracks were left for dead by the newly formed UCM.
Now, 160 years later, the survivors have banded together to form the Resistance, campaigning for freedom from alien invasion and from an overbearing government that deserted them. Taking to the skies in whatever ships they can cobble together, their time in the void has left the Resistance out-manned and out-gunned, but has bred some of the finest Admirals in the galaxy.