The North Korean officials and the Soviet Military Headquarters established a Security Bureau to preserve the public security of North Korea and to control armed groups. It was founded on November 19th of 1945, and covered security and military tasks. Especially, the Guard Ministry in the Security Bureau regulated all military forces in North Korea. The Guard Ministry declared that the main objective & motto for the leadership in North Korea would be the Kim Il-Seong's Leader Ideology and then propagated a catch-phrase : Kim Il-Seong is a hero and a great leader of all Koreans. The Ministry also recognized Kim Il-Seong's Anti-Japanese armed struggles as a legitimate independence movement for the Korean people. The Security Bureau introduced the Cultural Officer system for the first time in North Korea. This system was revised from the original Chinese and the Soviet Union systems, to fit in North Korean reality. The North Korean government changed the name of the system from "Political Officers" to "Cultural Officers," and had the Cultural Officers report to the "Military Officers," putting them under the jurisdiction of the Military. With this policy, the political arena acknowledged the fact that the military would be predicting the People's Democratic course. Party organizations were never established in the Korean People's Army. For the Security Bureau, the most important task was censorship. The Security Bureau carried out a purge which lasted for six months, beginning in December of 1945. The Security Bureau was very thorough in this matter, and all security organizations in North Korea had to go through it. The Security Bureau tried to prevent pro-Japanese groups from entering the party, and attempted to expel anti-soviet and anti-communist activists through censorship. As a result, more than 40 percent of the Security Bureau workers was replaced. After the censorship, the security organizations became a military force trusted by the Soviet Army and the North Korean Worker's Party.