roadside assistance group, comparable to the modern-day American Automobile Association or the British Automobile Association. Membership in the NSKK did not require any prior automotive knowledge; training in the organization was to make up for any lack of knowledge. However, the NSKK adhered to Nazi racial doctrine and screened its members for Aryan traits. Under the guidance of the police, numerous NSKK men were stationed at traffic junctions and trained in traffic control. On 20 July 1934, weeks after the major purge of the SA during the Night of the Long Knives, the NSKK was separated and promoted into an independent NSDAP organization, with Hühnlein still at its head. From 1935 onward, the NSKK also provided training for Panzer crews and drivers of the Heer (German Army). The NSKK had two sub-branches, the Motor-Hitler Youth (Motor-Hitlerjugend; Motor-HJ) and Naval NSKK (Marine-NSKK). The Motor-HJ branch, formed by Reichsjugendführer (Hitler Youth Leader) Baldur von Schirach after he became an NSKK member, operated 350 of its own vehicles for educational and training purposes. The Naval NSKK provided training in boat operation and maintenance. During the 1936 Summer Olympics in Berlin, the NSKK assumed responsibility for a variety of transport tasks, proving themselves effective at political propaganda by taking foreign visitors on designated tours. By 1938, NSKK members were undergoing mechanical and operational training for both civilian and military vehicles. Over time, training at NSKK schools became primarily focused on military related tasks. For his NSKK service and due in part to the general success of the organization, Hühnlein was promoted NSDAP Reichsleiter in 1938. He remained NSKK Korpsführer until his death in 1942, and was succeeded by Erwin Kraus. Affiliation with other Nazi organizations and the Second World War Sometime in August 1938, the NSKK began courier services for Organization Todt (OT) during construction of the Siegfried defensive line. Members of the NSKK transported classified documents, important reports and announcements, construction plans, and routine papers to and from the organization's headquarters. Exemplary service provided to the organization resulted in Hühnlein being given oversight for the transportation needs related to the task. Over 15,000 trucks went into operation, delivering building materials to the 22,000 individual construction sites of the Siegfried Line. Every day, over 5,000 buses were used to transport 200,000 workers to construction sites. At the time, the NSKK was also used by Hitler's chief architect, Albert Speer, who founded a unit known