Nawamindhachini Army base or 21st Infantry Regiment, Queen's Guard was organized according to the UN’s appeal to support the government of Korea to suppress the invasion of North Korea communists. Queen Sirikit, the Commander, named the division ‘Thahan Suea Nawamintra Rachini’ or ‘Thahan Suea Rachini’ (the queen's tiger soldiers). Currently, The regiment is composed of three battalions. It is one of the tourist sites located in the military area, and the training center with various activities.