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  • April 1939 - Germany begins developing their atomic bomb.
  • August 2, 1939 - Albert Einstein sends a letter written by Leo Szilard to Franklin Roosevelt, warnings of an atom bomb being developed by NAZI Germany and recommending America needed its own atomic program. Effectively starting the US nuclear program.
  • August 19, 1943 - Churchill and Franklin Roosevelt agree on the Quebec Agreement, outlining the terms for the coordinated development of the science and engineering related to nuclear energy, and, specifically nuclear weapons.
  • March 25, 1945 - Albert Einstein Writes again to Roosevelt to say the scientists working on the bomb need more contact with the decision makers who will decide to use the bomb.
  • April 12, 1945 - President Franklin Delano Roosevelt Dies.
  • April 24, 1945 - Sec Defense Henry Stimson schedules a meeting with President Harry Truman to tell him about the Bomb.
  • May 9, 1945 - Truman establishes the Interim Committee to recommend temporary wartime controls on how to handle the bomb.
  • May 12, 1945 - Second meeting of the Targeting Committee, and first mentioning of Hiroshima as a target.
  • July 17th - August 2, 1945 - The Potsdam Conference Meets.
  • August 19, 1943July 27th 1945 - Churchill and Franklin Roosevelt agree onPotsdam Declaration is made to Japan calling for the Quebec Agreementsurrender of all Japanese forces by the allies, the declaration lays out the conditions. Doesn't mention the bomb but says unless Japan surrenders it faces "prompt and utter destruction". Japan does not respond and the allies( US and Britain) take this as a rejection. Soviet Union is not part of the decision as it is still neutral in the Pacific War.  

  • outlining the terms for the coordinated development of the science and engineering related to nuclear energy, and, specifically nuclear weapons.July 30, 1945 - Secretary of War to Harry S. Truman, with Truman's handwritten note on reverse. Truman hand writes approval for press release upon dropping the bomb. This effectively is the Presidents final approval to drop two atomic bombs on imperial Japan.

    • March 25, 1945 - Albert Einstein Writes again to Roosevelt to say the scientists working on the bomb need more contact with the decision makers who will decide to use the bomb.
    • April 12, 1945 - President Franklin Delano Roosevelt Dies.
    • April 24, 1945 - Sec Defense Henry Stimson schedules a meeting with President Harry Truman to tell him about the Bomb.
    • May 9, 1945 - Truman establishes the Interim Committee to recommend temporary wartime controls on how to handle the bomb.
    • May 12, 1945 - Second meeting of the Targeting Committee, and first mentioning of Hiroshima as a target.
    • July 17th - August 2, 1945 - The Potsdam Conference Meets.
    • July 27th 1945 - Potsdam Declaration is made to Japan calling for the surrender of all Japanese forces by the allies, the declaration lays out the conditions. Doesn't mention the bomb but says unless Japan surrenders it faces "prompt and utter destruction". Japan does not respond and the allies( US and Britain) take this as a rejection. Soviet Union is not part of the decision as it is still neutral in the Pacific War.

    • July 30, 1945 - Secretary of War to Harry S. Truman, with Truman's handwritten note on reverse. Truman hand writes approval for press release upon dropping the bomb. This effectively is the Presidents final approval to drop two atomic bombs on imperial Japan.

    • Aug 6, 1945 - The Enola Gay drops the first Bomb on Hiroshima.
    • Aug 6, 1945 - President Truman on board the USS Augusta in the mid-Atlantic returning to the United States from the Potsdam Conference" when he was informed that the bomb had been dropped.
    • Aug 8th, 1945 - Soviet Union declares war on Japan.
    • Aug 9, 1945 - The Bockscar drops the second bomb on Nagasaki.
    • Aug 15, 1945 - Japan Announces Surrender.
  • Aug 6, 1945 - The Enola Gay drops the first Bomb on Hiroshima.
  • Aug 6, 1945 - President Truman on board the USS Augusta in the mid-Atlantic returning to the United States from the Potsdam Conference" when he was informed that the bomb had been dropped.
  • Aug 8th, 1945 - Soviet Union declares war on Japan.
  • Aug 9, 1945 - The Bockscar drops the second bomb on Nagasaki.
  • Aug 15, 1945 - Japan Announces Surrender.
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8 Spelling fix
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The Final Authorization was given July 31, 1945, by Truman at Potsdam. Truman, Churchill, and the Interim Committee all communicated by way of Cables and secret curriercourier.

The Final Authorization was given July 31, 1945, by Truman at Potsdam. Truman, Churchill, and the Interim Committee all communicated by way of Cables and secret currier.

The Final Authorization was given July 31, 1945, by Truman at Potsdam. Truman, Churchill, and the Interim Committee all communicated by way of Cables and secret courier.

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6 added 5 characters in body
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5 Added link to Wikipedia page for the Bockscar
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4 "Bockscar", not "Boxcar" (named after Capt. Frederick C. Bock). Plus a little formatting consistency to make up the numbers
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3 The Great Artiste was an observation plane, while Bockscar was the actual nuclear bomber
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2 The Great Artiste was an observation plane, while Bockscar was the actual nuclear bomber
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