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When was Harry S. Truman the United States' President?
5/25/2026

When was Harry S. Truman the United States' President?

Serving as the 33rd President of the United States from April 12, 1945, to January 20, 1953, Harry S. Truman succeeded Franklin D. Roosevelt after his death, as World War II was coming to an end. On July 30, 1945, he gave final approval to drop the two atomic bombs, Little Boy and Fat Man, on Hiroshima and Nagasaki on August, 6 and 9, 1945, which led to Japan’s surrender and a World War II victory for the United States.

Harry S. Truman (May 8, 1884, to December 26, 1972) served as the 33rd President of the United States from April 12th, 1945, to January 20, 1953, after the 32nd President, Franklin D. Roosevelt, passed away from a stroke on April 12, 1945.


Throughout his eight-year presidency, he made a series of bold decisions and key events that influenced American history.


These included: creating the 1947 Truman Doctrine to pledge United States financial support to Greece and Turkey against communist nations, approving the 1948 Marshall Plan to rebuild war-torn Western Europe after World War II, creating NATO in 1949 to defend against Soviet aggression during the Cold War, and sending United States troops to Korea in 1950.


President Truman also played a vital role in the Civil Rights movement from May 17, 1954 to April 4, 1968.


In this position, he desegregated the US Armed Forces on July 26, 1948, by signing Executive Order 9981, as well as creating a fair employment board to eliminate hiring discrimination within federal agencies with Executive Order 9980 in 1948.


Overall, the 33rd United States President, Harry S. Truman's legacy showed him as a decisive leader who navigated the United States through a period of profound transformation.

Frequently Asked Questions

1) What does the "S" in his name stand for?

It does not stand for a specific name; his parents gave him the middle initial "S" to honor both of his grandfathers, Anderson Shipp Truman and Solomon Young.

Source: https://www.trumanlibrary.gov/education/trivia/biographical-sketch-harry-truman

2) How did Franklin D. Roosevelt die?

He died from a massive cerebral hemorrhage, also known as a stroke, on April 12, 1945.

Source: https://www.roosevelthouse.hunter.cuny.edu/exhibits/death-president-roosevelt-april-12-1945/

3) What was the Truman Doctrine?

It was a 1947 United States foreign policy stating that the United States would assist all democratic nations under threat from external or internal authoritarian forces.

Source: https://history.state.gov/milestones/1945-1952/truman-doctrine

Why it matters

Harry S. Truman’s ability to make vital decisions that would impact the US set the foundation for domestic and global leadership, as well as alliances that are still key today.

Harry S. Truman NATO United States of America World War II Nagasaki Little Man Hiroshima Fat Boy

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