On 20 July 1934, weeks after the major purge of the SA in what became known as the Night of the Long Knives, the NSKK was separated and promoted into an independent NSDAP organization. From 1935 onward, the NSKK also provided training for Panzer crews and drivers of the "Heer" (German Army). The NSKK had two sub-branches within the organization known as the Motor-Hitler Youth ("Motor-Hitlerjugend"; Motor-HJ) and Naval NSKK ("Marine-NSKK"). The Motor-HJ branch was formed by "Reichsjugendführer" (Hitler Youth Leader) Baldur von Schirach after he became a member of the NSKK. It operated 350 of its own vehicles for educational and training purposes. The Naval NSKK trained men in the operation and maintenance of boats.