, or Defense Commissioner of the West, was the name given to a post created in 1186 to oversee the defense of Kyūshū. At the time, the primary mission of the Bugyō was to seek out and eliminate anyone who had supported Minamoto no Yoshitsune over his brother Yoritomo to become Shogun. However, less than a hundred years later, the Chinzei (Western Defense Headquarters) took on the responsibilities of a true Defense Headquarters, acting as the first line of defense against the Mongols. Over time, the position of Bugyō, the head of the Defense Headquarters, became known as Chinzei Shugo or Chinzei Tandai. This was but one of several similar posts established across the country.