This book is the final documentation on the Panzerkampfwagen IV series,
the most often-built German tank of World War II and presents the exact
chronology of the vehicle's development from 1935-45, plus many hitherto
unknown and pioneering test vehicles. The authors discuss the origin of
the "Large Tractor", the so-called Neubau (New-Built) Vehicle and the
attempts in 1944 to install the 7.5 cm Kampfwagenkanone 42 L/70 of the
"Panther" onto the Panzer IV. The authors have dedicated an entire
chapter to armament, and action in all wat theaters.