The entrenched fronts of World War I accelerated the development of armored vehicles with combustion engines among all warring parties. Armored wheeled vehicles had different roles due to their greater road dependency compared to those with tracked systems. Walter Spielberger documents the motorization of the German armed forces up to 1945. He describes all the important wheeled vehicle models used by the Reichswehr and Wehrmacht, starting from Daimler's first armored car to the tank decoys of the Weimar Republic and extending to radio vehicles in World War II.