Psychotechnic League Series by Poul Anderson

The Psychotechnic Institute - Born in the radioactive ashes of World War Three the Institute for Applied Psychodynamics had guided Planet Earth to a period of plenty that for the first time fulfilled Science's promise. But it is the central irony of human existence that prosperity bears the seeds of its own destruction; this time not just Earth but the entire Solar System would endure the flames of war.

Published with Poul Anderson's "War of the Wing-men".When the Order of Planetary Engineers sent Hall Davenant to Ganymede for a terraforming survey, they knew that the job on the airless, frigid Jovian moon would be tough. Changing it to resemble Earth - with fertile land, water and good air - was the biggest and most important planet conversion job ever attempted by the Engineers... morePublished with Poul Anderson's "War of the Wing-men".When the Order of Planetary Engineers sent Hall Davenant to Ganymede for a terraforming survey, they knew that the job on the airless, frigid Jovian moon would be tough. Changing it to resemble Earth - with fertile land, water and good air - was the biggest and most important planet conversion job ever attempted by the Engineers. But they hadn't counted on the already too Earthlike behaviour of the Ganymede colonists, who had never altered the ancient Earth-born habits of intrigue, bigotry and double-dyed treachery! less

The wars are over...The conflicts of Planet Earth are forgotten now. Even The Solar System War with its Cold Victory is barely a memory. In this third (sic) and final volume of The Psychotechnic League, the scale is immeasurably greater; in Space, in Time...and in violence.

For 300 years the planet of women awaited the coming of man. Then one arrives...He is Davis Bertram, a space-explorer. But how can he convince them he really is a man? Their legends have built Men into gods.Trying to be worthy of the Coming, the women imitate masculine virtues. They are warlike, ambitious, ruthless. Unless Davis can convince them he is a man, they will kill him for blasphemy... moreFor 300 years the planet of women awaited the coming of man. Then one arrives...He is Davis Bertram, a space-explorer. But how can he convince them he really is a man? Their legends have built Men into gods.Trying to be worthy of the Coming, the women imitate masculine virtues. They are warlike, ambitious, ruthless. Unless Davis can convince them he is a man, they will kill him for blasphemy. But if he does convince then, the Doctor-Priests will kill him to protect their own iron control of the planet... less

Out at the edge of the known. They called themselves The Nomads. Unplanned by-products of the chaotic explosion of mankind into space, they had evolved for themselves a way of life similar to that of the gypsies of ancient Earth - except that their gypsy wagons were mighty starships, each a self-contained world that housed a clan of many thousands. It was a hard life, but the only one the nomads knew, or wanted... moreOut at the edge of the known. They called themselves The Nomads. Unplanned by-products of the chaotic explosion of mankind into space, they had evolved for themselves a way of life similar to that of the gypsies of ancient Earth - except that their gypsy wagons were mighty starships, each a self-contained world that housed a clan of many thousands. It was a hard life, but the only one the nomads knew, or wanted. But someone, or something, did not want them to have it; one by one the nomad starships were disappearing without a trace - and it fell to Joachim, Captain of the Starship Peregrine, to find out why... less