Fun enough military sci fi with some okay ideas, lots of battles and big guns and a pleasingly fast pace. Nothing special but an entertaining read. ( )

An alien life form come to earth in advance of another alien swarm that is sweeping through the universe, wiping out intelligent civilizations. It works with one human, mathematical, genius to save a human remnant (in a time warp) who can later defend themselves against the remaining destructive aliens. An OK book.