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Why did the USA Drop Two Atomic Bombs on Japan in 1945?. The Atomic Bombing of Japan. On 6 th August 1945 the Americans dropped the world’s first atomic bomb on Hiroshima, a military base. - PowerPoint PPT Presentation
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Why did the USA Drop Two Atomic Bombs on Japan in 1945?
The Atomic Bombing of Japan
On 6th August 1945 the Americans dropped the world’s first atomic bomb on Hiroshima, a military base.Three days later they dropped another bomb on Nagasaki, the planned landing point for the US invasion of Japan.On 10th August 1945, the day after the bombing of Nagasaki, Japan surrendered.
Terror Bombing
Terror bombing was used by both sides during the Second World War.
The tactic was first perfected by the Germans who used it as a key part of their Blitzkrieg attacks in both Europe & Russia/.Both the RAF & USAF bombed Germany throughout the war.
The main aim of terror bombing was to destroy key industrial and military centres and their workers in the hope of destroying morale.
The Fire Bombing of TokyoThe capture of Iwo Jima and the total destruction of the Japanese air force meant that the USA could now bomb every major Japanese city.
In May 1945, the USA decided to firebomb the capital city Tokyo.
It was hoped that the massive civilian casualties would break Japanese morale and force them to surrender.
Enola Gay B – 29 Superfortress
Enola Gay dropped the first atomic bomb on the Japanese
city of Hiroshima. It was flown by Paul Tippets on the right
The A-Bombs used over Japan; Little Boy (left) and Fat Man (right)
Hiroshima Nagasaki
Map Showing the Damage Done to Hiroshima
The centre of the explosion
was hotter than the surface of
the sun!
Photograph of Hiroshima
Survivors from Hiroshima
These victims are covered in
blisters created by radioactivity
Photo of atomic bomb exploding over Nagasaki (9 August 1945)
Burnt remains of the
victims of Nagasaki
Casualties from the US bombing of Japanese cities in 1945
0
20000
40000
60000
80000
100000
120000
140000
Fire Bombing ofTokyo
140000
Hiroshima 100000
Nagasaki 81000
Killed
Different Interpretations
Why did the USA drop
The Atomic Bombs on
Japan?
Eastern Europe
A military weapon to end the war quickly, save lives and keep the Russians out
of the war.
Revenge for Pearl Harbor and Japanese
war crimes against Allied prisoners of war
To test the weapon on live human beings to see what affect it had.
To frighten the Russians so that they wouldn’t confront the
West.
Interpretation 1: Military Weapon
The war in the Pacific was expensive for the USA.
For example, on Iwo Jima it took five weeks of bitter fighting at a cost of more than 24,000 casualties before the USA took the island.
In taking another island, Okinawa, the US incurred a further 20,195 dead and 55,162 wounded.
US Government
estimated that
both Japan & the USA
would each lose
250,000 soldiers during
the invasion of
Japan!
Interpretation 1:Military Weapon
“..it was done to save 125,000 youngsters on the
American side and 125,000 on the Japanese side from getting killed
and that is what it did. It probably also saved a half million youngsters on both sides from being maimed
for life.
Harry Truman, 1963
Casualty Figures for 1945
0
50,000
100,000
150,000
USA
Japanese
USA 6,800 3,793 20,162
Japanese 22,000 113,593 98,654
Iwo Jima Luzon Okinawa
The Japanese government threatened to put to death 400,000
Allied prisoners of war if the USA invaded Japan!
Interpretation 2: RevengeOn 7th December 1941, 2400 American servicemen, six battleships and ten other ships were destroyed during a surprise attack by the Japanese. Roosevelt described the Japanese attack as a ‘day that shall live on in infamy’ because the Japanese didn’t declare war on the USA or give any warning that they were about to go to war.
Revenge for Pearl Harbor
“Pearl Harbor was done while we were at peace with Japan
and trying our best to negotiate a treaty with them… All you have to do is to go out and
stand on the keel of the Battleship in Pearl Harbor with
the 3,000 youngsters underneath it who had no
chance whatever of saving their lives.. It was plain murder!” Harry Truman, 1963
Interpretation 2: Revenge POWsThe Japanese religion Bushido believed that people who surrendered were cowards and should be mistreated.
Allied prisoners of war were beaten, deliberately starved, tortured, worked to death and even experimented on with chemical & biological weapons by the Japanese.
Some were even crucified on trees and beheaded by their captors!
There was a strong feeling in both the USA & Europe that
the Japanese should be taught a lesson!
Interpretation 3: Frighten the Russians
At the Yalta Conference in March 1945, the big three agreed that there should be early free elections in Eastern European countries like Poland as soon as the war was over.With the death of Roosevelt in April 1945, Harry Truman became the President of the USA.Truman did not trust Stalin to keep his promises.
RIP
Interpretation 3: Frighten the Russians
By the time the big three met again at Potsdam on 23rd July 1945, Stalin did not trust the Americans.
He wanted to create a buffer between USSR (Russia) and Western Europe to protect her from future invasions.
He started putting his Communist supporters into power in the Eastern European countries that he controlled.
He is trying to spread Communism!
We have been attacked twice in less than 25 years!
The USA
dropped the first
atomic bomb
14 days later!
Interpretation 3: Frighten the Russians
Russian Historian: Vadim Nekrasov, 1984
“Officially the Americans claimed that the bombings on Hiroshima and Nagasaki was
aimed at bringing the end of the war nearer and avoiding
unnecessary bloodshed and casualties. But they had entirely
different objectives. The purpose of the bombings was to
intimidate other countries,
above all the Soviet Union.”
Interpretation 3: Frighten the Russians
By October 1944 the Japanese had been cut off from 80% of their oil supplies.The US secret service had cracked the Japanese diplomatic codes and knew that they wanted to surrender before they dropped the bomb!
The use of this barbarous weapon was of no assistance to our war
against Japan. The Japanese were already defeated.
Admiral Leahy, 1950
Interpretation 4: To Test the WeaponThe Atomic Bomb cost $2,000 million to develop!Many of the Scientist & military advisors were keen to test the atomic bomb to sell what affect it would have on human beings.No one knew about the affects of radiation from a nuclear explosion.Later many US & British troops were exposed to radiation from the testing of nuclear weapons.
Interpretation 4: To Test the Weapon
A demonstration of the bomb might best be made on the
desert or on a barren island. Japan could then be asked to
surrender.
Robert Oppenheimer, June 1945
Interpretation 4: To Test the Weapon
A demonstration in an uninhabited area was not
regarded as likely to make Japan surrender. There was the danger of the test being
a dud. Also we had no bombs to waste
Henry Stimson, American Secretary for War, 1945
Conclusion: Now You Decide!
Why did the USA drop
The Atomic Bombs on
Japan?
Eastern Europe
A military weapon to end the war quickly, save lives and keep the Russians out
of the war.
Revenge for Pearl Harbor and Japanese
war crimes against Allied prisoners of war
To test the weapon on live human beings to see what affect it had.
To frighten the Russians so that they wouldn’t confront the
West.
Counting the Cost
Hiroshima 100,000 Nagasaki 81,000
POWs 400,000 US 250,000 Japanese 250,000
US Invasion of JapanUse the Bomb
What would you do?