Mark Collins – SIGINT and Another Reason Why the Atomic Bomb Was Needed Against Japan (reprise)

Further to this piece at the Washington Post,

Five myths about the atomic bomb

2. The bomb saved half a million American lives…

no precise calculation of losses could have been made then (or now); but the superb 1998 documentary account noted below by the CIA’s historical section points out that Japanese strength in the island of Kyushu–to be invaded in November 1945 (Operation Olympic, link from the Reports of General MacArthur)–was growing to be much stronger than the US military had anticipated. Hence casualties in just the first phase of conquering the Japanese islands would in all likelihood have been severe indeed:


– Center for the Study of Intelligence
– CSI Publications
– Books and Monographs
– The Final Months of the War With Japan: Signals Intelligence, U.S. Invasion Planning, and the A-Bomb Decision

The Final Months of the War With Japan

Very much worth the read.

Mark Collins, a prolific Ottawa blogger, is a Fellow at the Canadian Global Affairs Institute; he tweets @Mark3Ds

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