Harry S. Truman Harry S. Truman was sworn into office on April 12, 1945 as the thirty-third President of the United States of America. He did not win an election, but he was the Vice President under President Franklin Roosevelt who had died so Harry Truman became President. On August 6, 1945 President Truman announced the dropping of the A-bomb known as the Atomic Bomb. Truman, on August 9, 1945, announced he dropped a second atomic bomb on Japan that World …showed first 75 words of 219 total…

…showed last 75 words of 219 total…is known as the Truman Doctrine. In 1950, when the Communist government of North Korea invaded South Korea, Truman conferred promptly with his military advisers. A long, discouraging struggle happened as U.N. forces held a line above the old boundary of South Korea. Truman kept the war a limited one, rather than risk a major conflict with China and Russia. His term as President ended in 1953 when he decided not to run for another term.