From the back of the book: The Companion is a must-have handbook for all Gear Krieg field commanders. In addition to new units and weaponry, it includes advanced rules for artillery support, specialized infantry equipment, combat engineering and much more. The book also features a primer on small units tactics and a step-by-step scenario generator to quickly establish the setting and background of tabletop battles of any size. The gear Krieg Wargaming Companion features: - Artillery Support; - Fortifications and Field Engineering; - Heroes and Special Characters; - Hidden Set-up Rules; - Infantry Special Equipment; - WWII Tactical Primer; - Scenario Generator; - Complete Campaign Rules; - And scores of vehicles in an easy-to-use datacard format. Possession of the basic Gear Krieg Rulebook (DP9-501) is required to use this book.