This is not SF. It is a story to be used as a basis for a video game. This is OSC's first techno-thriller.
It's a fast read. It's fairly well written but a bit preachy in parts. The idea - a civil war in modern America- is interesting. It's just not executed well. Either OSC is a big enough author that he doesn't get edited any more or they wanted to work on the game and he had a tight deadline. For those who think it right wing propaganda, it's hero is a military officer but so is one of the bad guys. I don't think it is any more right than the Forever War series by Halderman.
Bottom line: don't spend money on it, especially the hard cover but I did read the whole thing so it is not that bad. The library or a friend would be a good source.