Hitler’s drive to modernize his armed forces gained new momentum with the arrival of Col. Heinz Guderian – the future spiritus movens of German armored warfare doctrine. Behind the scenes German design teams were busy working on prototypes of vehicles that would soon become the tools of the future war – light Pz.Kpfw. I and II, heavy (in keeping with contemporary classification) Pz.Kpfw. IV and medium Pz.Kpfw. III armed with a 37 mm gun. In the early stages of fighting in France it became clear that the vehicle didn’t carry enough punch and in later marks of the tank the 37 mm main gun was superseded by a 50 mm weapon. The ultimate version of the Pz.Kpfw. III was armed with a short barrel 75 mm gun, the largest that the tank’s turret could accommodate.About the Series:The In Combat series is aimed for those who would like to quickly learn about fascinating history of specific vehicle, plane or ship. Every tome consist of most important information about history, versions and service of one combat machine.Each book has tens of pages in A4 format and consists of dozens of interesting photos, color illustrations, technical drawings and maps. In every tome, there is a free gift in form of masks or decals for modelers.Minimonographs In Combat are the answer to many requests from our readers who asked us to make such series.