Originally the transport branch of the SA, the NSKK became the national organisation for the promotion of and training in motor vehicle operation and maintenance. Nazi – a short term for Nationalsozialist, i.e. a supporter of Nazism (National Socialism) or the Nazi Party. It was contrasted with Sozi, which was used to refer to a Sozialist, i.e. a supporter of Socialism or the Social Democratic Party of Germany.