The City Who Fought by Anne McCaffrey

This space adventure further develops McCaffrey's vivid future universe of diversified cultures, technological wonders and twisted, sometimes corrupt, politics. Space Station SSS-900C, a profitable but out-of-the-way trading and mining center, is attacked by Kolnari, pirates from a planet of sociopathic exiles. While awaiting the arrival of the Central Worlds' Navy, the inhabitants play for time with a major deception planned by Simeon, the shellperson operating the station, whose hobby is the study of early warfare, including guerrilla tactics.