The action in the book is not that bad although both the quality of the story, the action and the characters are nowhere near that of Empire Rising. It is not a bad book and if you are into the more “fantastic” and superficial young adult style stories you will probably find it quite good.
This is a quite nice little alien invasion trilogy by Raymond L. Weil. Sure it follows a fairly standard mode. Humanity learns that they are not alone. The aliens are not nice guys. Humanity learns, adapts and finally kicks ass. Not the most original story for sure but what the heck, I do really like these kind of stories.