I liked the introduction to the characters in this book, Karen Traviss drives home her opinion on the characters without it becoming bothersome. The Republic Clones are such an interesting subject to handle due to the intense debates there has been in the "real world" about cloning, set in the SW Universe it gives the author a possibility to imagine the problem from another viewpoint (or two). I especially like how the "same man" (the Clone Troopers) gets to be so different, and I guess you could have great wide debates on Nature versus Nurture on the background of this.
Going from a more Jedi-inspired reading to a series that deals with military troopers you do find yourself losing some of the Sci-fi fantasy of Star Wars and instead thinking of military action from whatever Hollywood war movie you last saw.
All in all it was a good read and I'm already halfway through the sequel.