Weapons Systems Evaluation Group

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The Weapons Systems Evaluation Group (abbreviated WSEG) was formed in 1949 to carry out Operational Research work for the Joint Chiefs of Staff of the United States Army and the United States Secretary of Defense. The group oversaw the appraisal of weapons used during the Korean War.[1][2] The group collaborated with Israel in evaluating the effectiveness of Soviet weapons during the Cold War.[3]


The first Research Director was Philip M. Morse, who served a year and a half before returning to MIT in the summer of 1950. From 1957 until 1960 John H. Sides was director of WSEG.

Hugh Everett III worked at the WSEG from 1956 until 1964. Much of his works remains classified. During his time with the WSEG Everett worked on various studies of the Minuteman missile project, which was then starting. Together with George E. Pugh he wrote an influential study The Distribution and Effects of Fallout in Large Nuclear Weapon Campaigns.[4]


  1. ^ Fay, Elton C. (1950-10-13). "Appraisal of Weapons used in Korea Due". TimesDaily. Associated Press. Retrieved 2011-09-01.
  2. ^ "Weapons' Values to be Appraised". Spokane Daily Chronicle. Associated Press. 1948-12-15. Retrieved 2011-09-01.
  3. ^ Hoffman, Fred S. (1973-12-18). "Effectiveness of Soviet anti-aircraft missile surprising". The Leader-Post. Associated Press. Retrieved 2011-09-01.
  4. ^ Hugh Everett III and George E. Pugh, "The Distribution and Effects of Fallout in Large Nuclear-Weapon Campaigns", in Biological and Environment Effects of Nuclear War, Hearings Before the Special Sub-Committee on Radiation of the Joint Congressional Committee on Atomic Energy, June 22–26, 1959, Washington, D.C., U.S. Government Printing Office, 1959.
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