You will find inside this book background, technical data and color schemes for 30 vehicles used by the Imperium's elite fighting forces. Several of these have been included more than once because the different armies have different options for the same vehicle, and the book needs to show this. We couldn't very well include Space Marine Rhinos, and not the Inquisition version, although the rules are similar they are not exactly the same and neither are the colour schemes. As a definitive guide the book needs to be thorough. Other vehicles, such as the Chimera and Valkyrie, were included in IA: Volume 1, but again these vehicles are available to Inquisition forces, and the book would be incomplete without them..... ...Using this book is as much about using the background material and illustrations as it is the game rules.Hopefully the background should provide ideas for games including the model, and the pictures should help fire the imagination. Try using the formation diagrams as a guide to battlefield tactics, or making a certain type of vehicle central to a scenario.