The Galaxy delivers an ultimatum: “Earthmen, Go Back!”  Earth faces a choice between eventual colonisation at the hands of a ruthless aggressor or immediate action against the whole Galaxy.  Stephen Brady, Commander of the Terran Forces, is the man to make this decision of cosmic importance. The odds are deadly, but Brady knows if he does not speak now for conquest, all Earth might remain silent in defeat for eternity. Cover art credited to Norman Adams.