The Beginning or the End: How Hollywood--and America--Learned to Stop Worrying and Love the Bomb). For earlier days scroll down main page for this blog.
August 4, 1945:
—On Tinian, Little Boy is ready to go, awaiting word on weather, with General LeMay to make the call. With the weather clearing near Hiroshima, still the primary target, taking off the night of August 5 appears the most likely scenario. Secretary of War Stimson writes of a “troubled” day due to the uncertain weather, adding: “The S-1 operation was postponed from Friday night [August 3] until Saturday night and then again Saturday night until Sunday.”
—Hiroshima remains the primary target, with Kokura #2 and Nagasaki third.
--Gen. Douglas MacArthur, who directed the U.S. war in
the Pacific, and would soon become the head of our occupation of Japan,
had still not been told of the existence and planned use of the new
bomb. Norman Cousins, the famed author and magazine editor, who was an
aide to MacArthur, would later reveal: "MacArthur's views about the
decision to drop the atomic bomb on
Hiroshima and Nagasaki were starkly different from what the general
public supposed....When I asked General MacArthur about
the decision to drop the bomb, I was surprised to learn he had not even
been consulted. What, I asked, would his advice have been? He replied
that he saw no military justification for the dropping of the bomb. The
war might have ended weeks earlier, he said, if the United States had
agreed, as it later did anyway, to the retention of the institution of
the emperor." As we noted earlier, both General Eisenhower and Truman's top aide, Admiral Leahy, both protested the use of the bomb against Japan in advance.
—Paul Tibbets, pilot of the lead plane, the Enola Gay, finally briefs others in the 509th Composite Group who will take part in the mission at 3 pm. Military police seal the building. Tibbets reveals that they will drop immensely powerful bombs, but the nature of the weapons are not revealed, only that it is “something new in the history of warfare.” When weaponeer Deke Parsons says, “We think it will knock out almost everything within a three-mile radius,” the audience gasps.
Then he tries to show a film clip of the recent Trinity test—but the projector starts shredding the film.
Parsons adds, “No one knows exactly what will happen when the bomb is dropped from the air,” and he distributes welder’s glasses for the men to wear. But he does not relate any warnings about radioactivity or order them not to fly through the mushroom cloud.
—On board the ship Augusta steaming home for the USA after the Potsdam meeting, President Truman relaxes and plays poker with one of the bomb drop’s biggest booster, Secretary of State Jimmy Byrnes. Truman’s order to use the bomb had simply stated that it could be used any time after August 1 so he had nothing to do but watch and wait. The order included the directive to use a second bomb, as well, without a built-in pause to gauge the results of the first and the Japanese response—even though the Japanese were expected, by Truman and others, to push surrender feelers, even without the bomb, with Russia’s entry into the war on August 7. Hence: assembly-line massacre in Nagasaki.