From the back cover, "The Homeworld of the Arachnid menace has been located and the Mobile Infantry has been moved into position to strike -- are you ready to join the greatest battle Mankind has ever initiated? Klendathu Invasion is the largest combined fleet and Mobile Infantry operation of the Arachnid War to date. Within these covers: Invasion: The story of Starship Troopers continues, from intitial preparations for invasion to the final retreat. Army Lists: The Mobile Infantry gains the use of the huge invasion companies, while the Arachnids fight back with cunning traps and tunnel systems. Fighting on Klendathu: Determine the fate of your own Mobile Infantry company during the invasion in a complete campaign."