Lieutenant Colonel Cletus Grahame has been an instructor at the Western Alliance military academy since a battle injury crippled one of his knees, and forced his retirement from active duty. He has completed three volumes of a planned twenty-volume series of books on military strategy and tactics, and believes his analysis can revolutionize military science, although many do not take his work seriously. Feeling he needs to get out in the field and try putting his theories into practice, he leaves the academy and arranges to be sent to the world of Kultis, where the Alliance is supporting the Exotic colony of Bakhalla in a war against the neighboring colony of Neuland, backed by the Coalition. The heart of his military strategy, based in part on
fencing, is what he labels the "tactics of mistake," enticing one's opponent into overreaching, and being ready to take advantage of the mistake. This description is an adaptation of a similar concept in the novel
Scaramouche by
Rafael Sabatini when the character Moreau studies at the salon of the Master of Arms. On the first night out on the ship to Kultis, he deliberately antagonizes Dow deCastries, Secretary of Outworld Affairs for the Eastern Coalition, forcing deCastries to take notice of him. He also meets Colonel Eachan Khan, an officer of the Dorsai troops who have been hired by the Exotics, and Khan's daughter Melissa. Mondar, an Exotic official, is also present, and takes notice of Grahame. Putting his theories to work, Grahame repeatedly entices deCastries and the Neulanders into attempting incursions, where he is ready to pounce on them. Finally, after conveniently getting his own uncooperative commander out of the way, he entices them to launch a major invasion. Using the Dorsai troops, who had been underestimated and little-used by the Alliance command, he actually wins the war, handing deCastries a humiliating defeat. His victory has actually made him rather unpopular with his own command. Mondar, using the Exotic science of ontogenetics, recognizes him as a key mover of history, and tries to recruit him to join the Exotics, but he chooses instead to emigrate to the Dorsai, in order to begin building them into the kind of military force he envisions. It seems he possesses some of the advanced mental abilities of the Exotics, and with their help, he is able to heal his crippled knee. Melissa wants her father to return to Earth, and the General's rank he had enjoyed in the Western Alliance, and to do so, she needs the influence of deCastries. Grahame forces Melissa to marry him to prevent Eachan's departure, as he feels Eachan is necessary to his plans. Over the course of years, Grahame builds the Dorsai into the unique fighting force that becomes so famous in later years. With their advanced training and superior tactics, they can defeat larger forces and suffer far fewer casualties than any others, making them far more economical for other worlds to hire. Gradually, they reach a status where other worlds no longer need to depend on Earth for fighting forces to protect them, threatening Earth's control of the younger worlds through its system of
client states. To prevent this loss of position, the two Earth factions, the Western Alliance and Eastern Coalition, unite their forces under deCastries, and attempt to stretch the Dorsai forces so thin that they will be conquered. When Earth invades the Dorsai, there are no soldiers to defend it, but deCastries underestimates the power of the Dorsai people themselves. The final result leads to a totally new balance of power among the settled worlds. (The actual battle for the Dorsai itself is given little coverage in this book. The ultimate battle for Foralie district, Grahame's home, ends up being between deCastries and Amanda Morgan, a woman in her late nineties who leads the home defense. In the novella
Amanda Morgan she is used as the ultimate example of the spirit of Dorsai.) ==Reception==