Mars must defend itself against a ruthless dictator, or die.Mars starts out as a battlefield, but soon both armies find themselves united against the charismatic dictator of all Earth, who is demanding that they return or be destroyed. Their only hope is to turn Mars into a new home, which they do, with the aid of some ancient "caretakers" of the planet.
Used availability for Robert L Forward's Martian Rainbow
June 1991 : USA Hardback
May 1992 : USA Mass Market Paperback