Due to the limitations of the Versailles Treaty of 1919, the German army could not develop many means of reconnaissance or communication, and for this reason, among others, in the 1920s, they put emphasis on the development of heavy motorcycles with good or very good road and off-road performance. After the Nazis came to power in 1933, the process did not stop, but it actually accelerated. He led to the introduction in the 1930s and during World War II of such successful designs as the BMW R-12, BMW R75, or Zündapp KS 750. It is worth adding that motorcycles in the German army very often had a sidecar, intended for a soldier with a machine gun. Motorcycles in the German army proved themselves particularly well in the initial period of World War II, especially in the course of fighting in Poland (1939), France (1940), and also in North Africa (1941–1943). They were used primarily for reconnaissance operations, sometimes in the rear of the enemy army, and for liaison tasks.