The Museum displays a brief history of the role cryptology played in Korean War. In 1945, Korea was liberated from Japan, but split in two. The Soviet Union aligned with North Korea, the Democratic People's Republic of Korea (DPRK). The United States allied with South Korea, the Republic of Korea. On June 25, 1950, the North Koreans invaded the south. The conflict continued for three years ending in 1953 with the signing of an armistice agreement. Communications Intelligence played a role throughout the Korean War. The predecessor to the National Security Agency, the Armed Forces Security Agency (AFSA,) analyzed Chinese civil communications, employed sound-detecting devices, and deployed intercept sites near North Korea.