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Leslie R. Groves, Jr.

Leslie Groves
Leslie Groves.jpg
Groves as a major general
Birth name Leslie Richard Groves Jr.
Born (1896-08-17)17 August 1896
Albany, New York
Died 13 July 1970(1970-07-13) (aged 73)
Washington, D.C.
Place of burial Arlington National Cemetery
Allegiance United States United States of America
Service/branch Emblem of the United States Department of the Army.svg United States Army
Years of service 1918–1948
Rank three silver stars Lieutenant General
Commands held Armed Forces Special Weapons Project
Manhattan Project
Battles/wars World War I
Occupation of Nicaragua
World War II
Awards Distinguished Service Medal
Legion of Merit
Order of the Crown (Belgium)
Companion of the Order of the Bath (Great Britain)
Medal of Merit (Nicaragua)
Other work Vice President Sperry Rand

Lieutenant General Leslie Richard Groves Jr. (17 August 1896 – 13 July 1970) was a United States Army Corps of Engineers officer who oversaw the construction of the Pentagon and directed the Manhattan Project, a top secret research project that developed the atomic bomb during World War II.

As the son of a United States Army chaplain, Groves lived at a number of Army posts during his childhood. He graduated fourth in his class at the United States Military Academy at West Point in 1918 and was commissioned into the U.S. Army Corps of Engineers. In 1929, he went to Nicaragua as part of an expedition whose purpose was to conduct a survey for the Inter-Oceanic Nicaragua Canal. Following the 1931 Nicaragua earthquake, Groves took over responsibility for Managua's water supply system, for which he was awarded the Nicaraguan Presidential Medal of Merit. He attended the Command and General Staff School at Fort Leavenworth, Kansas, in 1935 and 1936, and the Army War College in 1938 and 1939, after which he was posted to the War Department General Staff.


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