Leslie Groves

American military officer (1896–1970)

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, the top secret research program that developed the atomic bomb during World War II, leading to the atomic bombings of Hiroshima and Nagasaki in 1945. The son of a U.S. Army chaplain, Groves lived at various Army posts during his childhood.

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