Modern weapon technology and cunning military strategy have dominated the waging and winning of wars for centuries. The emphasis in warfare has been on mobility ever since the end of "war of position" tactics at the beginning of the 20th century. The invention of the battle tank provided a degree of mobility never achieved before and proved a decisive factor in ending the First World War. The so-called "Blitzkrieg" introduced at the beginning of the Second World War was only successful on the basis of modern battle tanks in combination with highly-efficient air cover supplied by the German Luftwaffe. The exact analysis of important tank battles highlight the technical standards and tactical values and the involvement of the tank crews. These rare film excerpts in both colour and black and white help to illustrate the development of the German tank from the humble beginnings during the First World War right up to Hitler's final defeat in 1945.