The entire plot is set, not entirely unexpectedly, during one day on Mars. The United States is now a Solar System wide government that even extends to a few extrasolar colonies. However, a nation of separatists exists in a “reservation” on Mars. On this day, the separatists attack the United States. The book follows the military actions, and the unexpected plan of the separatists.
As a military science fiction action book, this is a pretty good one. Stuffed with action scenes involving futuristic weapons like shape-shifting robots (think Transformers that can become fighter plane, robot, tank), the book drags you along at a furious pace. So far so good. The backstory, filled in over the course of the novel, is interesting, telling how the United States has become ever more detached from its original ideals of true democracy and representation. The president runs instant polls to figure out how to deal with crises instead of making decisions on his own. The separatists don’t shy away from atrocities. They also decry the current United States, and see themselves as defenders of the freedom of individuals to make their own choices. One thing that bugged me was the sub-par editing, especially in the first half of the book. There is an excess of spelling and grammatical errors, as well as some poor style. This is especially irritating given Baen Books’ typically high standards in that department.