Arms Race Timeline By Sydney_Marie_16 Jul 16, 1945 First U.S. atomic bomb is detonated. Began the threat of U.S. nuclear superiority. Aug 6, 1945 U.S. drops atomic bomb on Hiroshima. Jan 30, 1950 Truman approves H-Bomb. Jun 2, 1950 Korean War Sep 15, 1950 General MacArthur pushes invading forces back behind the 38th Parallel. Apr 11, 1951 Truman is forced to remove MacArthur from duty. Period: Mar 17, 1953 to Jun 4, 1953 Nuclear Arms Race atomic tests series 11 explosions at Nevada Test Site. Mar 1, 1954 H-Bomb Castle-Bravo test. Jun 29, 1956 USSR sent tanks into Poznan, Poland, to suppress demonstrations by workers. Dec 19, 1960 Cuba aligns itself with Soviet Union. Oct 14, 1962 Cuban Missle Crisis.
