Sleepers war

"Created to defeat the invaders. Forgotten in victory. They will rise again-- We were outnumbered, outfought. Mankind was about to fall to the alien Flock. Our only chance was a desperate gamble, transforming Tier One Spec-Ops agents into deadly super soldiers. In the end, we won the war, but we lost the peace. The Flock surrendered and spent the next two hundred years making reparations, indentured to humanity, doing everything humans did not want...