"In his mind Walcott went back over the wars that history had recorded: 2850, Mars v. Venus; 2817, Mars v. Earth; 2780, Earth v. Venus; 2612, Earth and Mars v. Venus; 2590, Mars and Venus v. Earth, 2471, attack from outside the system by weird things called Luarkas..." --Orbit One by "Mel Jay" (Lionel Fanthorpe), 1966