Kel Cheris, half-possessed by the ghost of notorious General Shuos Jedao, survived an assassination attempt that wiped out her entire fleet. Or did she? Physical appearances aside, it appears to be Jedao who usurps command aboard the Hierarchy of Feasts. Formation instinct compels the Kel to follow Jedao – but will he really defend the Hexarchate from the Hafn? Or will he betray them to their deaths? Ninefox Gambit was one of my favourite books last year, although not all reviewers shared my enthusiasm for its unapologetically oblique world-building and its obsession with the ethics of war. In Raven Stratagem, the core dilemma is much the same – can the ghost of the mass-murdering general be trusted? – but this time we see the action strictly through outside eyes. Enter General Kel Khiruev, tormented by her enforced loyalties to both the Hexarchate and – unwillingly – to Jedao as her superior officer. Haunted by childhood memories of her mother executing her father for heresy, it’s only Kel formation instinct that suppresses her doubts about the Hexarchate. When Jedao arrives, she can’t resist the urge to obey him even knowing Kel Command wants him dead. By contrast, Lieutenant Colonel Kel Brezan has weak…