I gave this book 4 worlds, but if your not as big a military history buff as I am it might only be a 3 worlds rating for you. The story is based around an ensemble cast of characters, that follows at least 15 different story lines, and I am being conservative there , at times there are over 20, that twist in and out, sometimes merges, and then separates, and them goes on and touches a different story line. All of the major players in World War 2 as well as several alien points of view are represented in the book. The book is so well written that the each characters situation is easy to keep separate. I was always slightly disappointed when I had to switch from one member of the cast to another, but I also couldn't wait to see what was going to happen to the next set of characters.

All of the characters change as the story moves forward and they all don't grow or change for the good in all cases. The author does a great job in mixing the historical facts as we know them with a unique and plausible alien race, that represents a difficult and possibly unbeatable foe. The Human Race does have certain advantages over the Invaders. The Invaders have landed and have a technology level about what we have in today's world in the area of fighting equipment. But they lack our native ability of rapid change, growth and development. The only question is, can we stop fighting among ourselves long enough for that to make a difference but then we don't even know if that will be enough.