Rank in Judo first five are colored black, 6th, 7th, and 8th "dan" have alternating red and white panels (dandara), and for 9th, 10th "dan" and above, the belts are solid red. In judo's promotion system as originally finalized by Kanō around 1926 there was no maximal dan rank, and judoka holding 10th dan would normally wear a red belt, but also could wear a white belt, the same color as the lowest kyū rank. However, since the highest dan rank reached in judo for a living person or conferred posthumously remains 10th dan, any judo dan rank higher than 10th dan is
Judo in the United States the naval academy. Judo suddenly had its first strong roots in the United States. Yoshiaki decided to return to Japan, but other Japanese Judo participants followed his example. The judo concentration was mainly centered in Washington before World War II, but several centers existed on the west coast, including Tokugoro Ito's dojo in Los Angeles, which was founded in 1910. Judo first entered the Western United States when Dr. T Ito began teaching Judo in Denver in the 1930s. During World War II Judo was banned in many areas due to the Japanese fear; however, a boom followed the war.