The Committee for the Scientific Survey of Air Defence (CSSAD),[1] also known as the Tizard Committee after its chairman, Henry Tizard, was a pre-World War II scientific mission to study the needs of anti-aircraft warfare in the United Kingdom.
Winston Churchill credited the success of the Battle of Britain to this work.
[2][3] In September 1939, it was merged with the Committee for the Scientific Survey of Air Offence, which had been formed in 1937, and was also chaired by Tizard, to form the Committee for the Scientific Survey of Air Warfare (CSSAW).
[4] Tizard helped convince Churchill to hand over Britain's most important secret weapons technology to the Americans with no strings attached.
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