Dan (rank) highest level that might be attained, with instructor certification and judge/judgment authorization being understood as higher-level or more sophisticated. Many arts use between one and ten dan ranks: In some martial arts, black belts are worn for all "dan" grades. In others, the highest grade (10th "dan") wears a red colored belt. In Jūdo and Shotokan 6th to 8th "dan" may wear a red and white-patterned belt and 9th to 10th "dan" may wear a solid red belt. There is some variation even within styles. Generally, belts do not have markings that indicate the actual "dan" grade. Okinawan styles used
German Judo Federation complemented each other when the DJB was founded. The DDK was responsible for the Dan bearers, teacher training, dissemination and teaching of judo and examinations. The DJB was from 1955 alone responsible for the competition events - for national and international tournaments and championships, after the DAB had transferred in December 1954 its responsibility for the judo sport to the DJB. The DJB was recognized in 1956 by the German Sports Federation and worked together until 1990 together with the DDK. On 2 February 1991, the German Judo Federation of the FRG (DJB) and the German Judo Association of the