A study done for Secretary of War Henry Stimson's staff by William Shockley estimated that invading Japan would cost 1.7–4 million American casualties, including 400,000–800,000 fatalities, and five to ten million Japanese fatalities.
Et studie udført for krigsminister Henry Stimsons stab af William Shockley anslog, at erobringen af Japan ville koste 1,7 til 4 millioner amerikanske tab, herunder 400.000-800.000 dræbte, og fem til ti millioner japanske dødsfald.