Homeworld is the third book in the Odyssey One series of books. This is a series i have enjoyed since the first book. The earlier books had some issues, and this continues. However the story makes up for a lot of that.
The series is an entry in the military Science Fiction Genre. It is based in a post WW3 era, when the war between China and America ended up with the formation of two large blocs, one centered on China, The eastern Block (Block), and one on the US, North American Confederation(NAC). In this post war era both sides have expanded out in the solar system in a way very similar to the cold war expansion.
in the first book of the series the NAC had developed a faster than light method for travel and so began exploring the galaxy. They found that there was a system of colonies very near to the earth that was made up of humans. These people had been quite peaceful, but where now been attacked by an Alien, and monstrous, Race called the Drasin. The earthlings, Terrans, who are very good at fighting give a hand.
In Homeworld, a BLOCK ship sets out to also explore the galaxy. However things go wrong, and they lead the Drasin to Earth. This leads to a Fantastic fight inside the SOL system, as all parties attempt to save Earth from the Monstrous Drasin.
If you have read any Military SF and enjoyed I would recommend this series. Though book one has some rough patches, the series is well worth reading as book two and three are a lot better.