Alongside the KPA and WPRG, also taking part are the policemen and women of the Ministry of Social Security's Korean People's Internal Security Forces (which also includes border police). In 2015 the Korean Children's Union made an inaugural appearance in the parade celebrating the 70th anniversary of the Worker's Party of Korea, forming the rear contingent of the military parade ground column made up of middle and junior high school students who are part of the KCU's Young Pioneer Corps. The first ever modern KCU parade, including cadets from the Mangyongdae and Kang Pang Sok Revolutionary Schools, was held in Kim Il-sung Stadium in 2012.