Atomic bombing of Hiroshima and Nagasaki (1945)
Authorised the use of the first atomic weapons, leading to Japan's surrender
US Presidents · 20th century
1884–1972 · American
Democratic
In office: 1945–1953
Harry S. Truman, the 33rd president, succeeded Franklin D. Roosevelt in April 1945 after only 82 days as vice president. He took the decision to use atomic bombs against Japan and shaped the early Cold War through the Truman Doctrine, the Marshall Plan, the Berlin Airlift and NATO, before winning a famous upset election in 1948.
Atomic bombing of Hiroshima and Nagasaki (1945)
Authorised the use of the first atomic weapons, leading to Japan's surrender
The Truman Doctrine (1947)
Pledge to support free peoples resisting subjugation, starting with aid to Greece and Turkey
The Marshall Plan (1948)
European Recovery Program of US aid to rebuild Western Europe
The Berlin Airlift (1948–1949)
Supply of West Berlin by air during the Soviet blockade
Executive Order 9981 (1948)
Ended racial segregation in the US armed forces
'Dewey Defeats Truman' (1948)
Mistaken Chicago Daily Tribune headline he held up after winning the election
Dismissal of General Douglas MacArthur (1951)
Relieved MacArthur of command during the Korean War