The Nari Mintra Rajchini Camp, also known as the 21st Infantry Regiment, Royal Guard, was established at the request of the United Nations to support the government of the Republic of Korea in repelling the invasion by North Korean communist forces. Her Majesty Queen Sirikit, the Queen Mother, held the honorary title of the special commander of this regiment and bestowed the nickname 'Nari Mintra Rajchini Soldiers' or 'Queen's Tiger Soldiers' upon them. Currently, there are three battalions stationed as royal guards. This site not only serves as a military tourist attraction but also functions as a training center for endurance testing and various activities.