Mongolia and Taiwan By facebooker_100000498406933 Aug 4, 1921 Mongolian People's Army was established in 1921 Mongolian People's Army was established in 1921 Nov 12, 1925 Soviet Red Army troops remained in Mongolia at least until 1925 May 2, 1939 Joint Mongolian-Soviet armies successfully fended off Japanese military advances Jul 5, 1945 Japan formally surrenders to taiwan on the deck of U.S battleship in Missouri Aug 2, 1945 Mongolia declared war against Japan May 2, 1950 Korean War begins when Communist forces in North Korea taiwan Aug 5, 1950 In the 1950s, serious efforts at military modernization took place Jan 1, 1979 The United States announces it will terminate its diplomatic relations with Taiwan on Jan. 1, 1979 Jul 15, 1987 The end of martial law is declared in Taiwan May 3, 1988 By 1988 the armed forces numbered 24,500 active-duty